feat: infer beatport release artist

# Conflicts:
#	internal/audio/tag/tagger.go
#	internal/audio/tag/tagger_test.go
#	internal/urlparse/parse_test.go

cmd/rip/helpers.go

@@ -65,7 +65,7 @@ func addURLToQueue(ctx context.Context, mainApp *app.Main, raw string) bool {
 		fmt.Printf("not yet supported: %s (kind=%s)\n", raw, parsed.Kind)
 		return false
 	}
-	if parsed.Source != "qobuz" && parsed.Source != "tidal" && parsed.Source != "deezer" && parsed.Source != "soundcloud" {
+	if parsed.Source != "qobuz" && parsed.Source != "tidal" && parsed.Source != "deezer" && parsed.Source != "yandex" && parsed.Source != "beatport" && parsed.Source != "soundcloud" {
 		fmt.Printf("provider not yet implemented: source=%s url=%s\n", parsed.Source, raw)
 		return false
 	}

cmd/rip/main.go

@@ -294,7 +294,7 @@ func main() {
 		}
 	case "id":
 		if len(os.Args) < 5 {
-			fmt.Println("usage: rip id <source> <track|album|playlist|artist|label|video> <id> [quality] [--force|--ignore-db]")
+			fmt.Println("usage: rip id <source> <track|album|playlist|artist|label|chart|video> <id> [quality] [--force|--ignore-db]")
 			os.Exit(2)
 		}
 
@@ -317,6 +317,14 @@ func main() {
 				cfg.Session.Qobuz.Quality = opts.quality
 			case "tidal":
 				cfg.Session.Tidal.Quality = opts.quality
+			case "yandex":
+				cfg.Session.Yandex.Quality = opts.quality
+			case "beatport":
+				if opts.quality < 1 {
+					fmt.Fprintf(os.Stderr, "quality error: beatport quality must be 1-4\n")
+					os.Exit(2)
+				}
+				cfg.Session.Beatport.Quality = opts.quality
 			}
 		}
 
@@ -346,7 +354,7 @@ func main() {
 		var sopts searchOptions
 		if len(os.Args) < 5 {
 			if !term.IsTerminal(int(os.Stdin.Fd())) {
-				fmt.Println("usage: rip search <qobuz|tidal|deezer|soundcloud> <track|album|playlist|artist|label|video> <query...> [--limit N] [--force|--ignore-db] [--no-download]")
+				fmt.Println("usage: rip search <qobuz|tidal|deezer|yandex|beatport|soundcloud> <track|album|playlist|artist|label|chart|video> <query...> [--limit N] [--force|--ignore-db] [--no-download]")
 				os.Exit(2)
 			}
 			source, mediaType, sopts, err = promptSearchInteractive(cfg.Session.CLI.MaxSearchResults)
@@ -380,6 +388,14 @@ func main() {
 			fmt.Fprintln(os.Stderr, "soundcloud search currently supports media types track and playlist")
 			os.Exit(2)
 		}
+		if source == "yandex" && mediaType != "track" && mediaType != "album" && mediaType != "playlist" && mediaType != "artist" {
+			fmt.Fprintln(os.Stderr, "yandex search currently supports media types track, album, playlist, and artist")
+			os.Exit(2)
+		}
+		if source == "beatport" && mediaType != "track" && mediaType != "album" && mediaType != "label" {
+			fmt.Fprintln(os.Stderr, "beatport search currently supports media types track, album, and label")
+			os.Exit(2)
+		}
 		if sopts.query == "" {
 			fmt.Fprintln(os.Stderr, "search query cannot be empty")
 			os.Exit(2)

cmd/rip/search.go

@@ -293,12 +293,12 @@ func writeSearchResultsToFile(source, mediaType string, results []searchResult,
 }
 
 func isAllowedSearchSource(source string) bool {
-	return source == "qobuz" || source == "tidal" || source == "deezer" || source == "soundcloud"
+	return source == "qobuz" || source == "tidal" || source == "deezer" || source == "yandex" || source == "beatport" || source == "soundcloud"
 }
 
 func isAllowedMediaType(mediaType string) bool {
 	switch mediaType {
-	case "track", "album", "playlist", "artist", "label", "video":
+	case "track", "album", "playlist", "artist", "label", "video", "chart":
 		return true
 	default:
 		return false
@@ -318,7 +318,7 @@ func promptSearchInteractive(defaultLimit int) (string, string, searchOptions, e
 	}
 
 	for {
-		source, err := read("Source [qobuz/tidal/deezer/soundcloud]: ")
+		source, err := read("Source [qobuz/tidal/deezer/yandex/beatport/soundcloud]: ")
 		if err != nil {
 			return "", "", searchOptions{}, err
 		}
@@ -341,6 +341,14 @@ func promptSearchInteractive(defaultLimit int) (string, string, searchOptions, e
 			fmt.Println("SoundCloud search supports track and playlist only.")
 			continue
 		}
+		if source == "yandex" && mediaType != "track" && mediaType != "album" && mediaType != "playlist" && mediaType != "artist" {
+			fmt.Println("Yandex search supports track, album, playlist, and artist only.")
+			continue
+		}
+		if source == "beatport" && mediaType != "track" && mediaType != "album" && mediaType != "label" {
+			fmt.Println("Beatport search supports track, album, and label only.")
+			continue
+		}
 
 		query, err := read("Query: ")
 		if err != nil {
@@ -544,6 +552,72 @@ func normalizeSearchResults(source, mediaType string, pages []map[string]any) []
 				)
 				appendUnique(searchResult{ID: id, Title: title, Artist: artist, Date: date, TrackCount: trackCount})
 			}
+		case "yandex":
+			items, ok := page["items"].([]any)
+			if !ok {
+				continue
+			}
+			for _, raw := range items {
+				itm, ok := raw.(map[string]any)
+				if !ok {
+					continue
+				}
+				id := asString(itm["id"])
+				title := asString(itm["title"])
+				if title == "" {
+					title = asString(itm["name"])
+				}
+				artist := nestedSearchString(itm, "artist", "name")
+				if artist == "" {
+					artist = nestedSearchString(itm, "performer", "name")
+				}
+				album := nestedSearchString(itm, "album", "title")
+				trackCount := firstPositiveInt(
+					searchInt(itm["trackCount"]),
+					searchInt(itm["track_count"]),
+					searchInt(itm["tracks_count"]),
+				)
+				explicit := searchBool(itm["explicit"])
+				date := firstNonEmpty(
+					asString(itm["release_date"]),
+					asString(itm["releaseDate"]),
+					nestedSearchString(itm, "album", "release_date"),
+					nestedSearchString(itm, "album", "releaseDate"),
+				)
+				releases := 0
+				if mediaType == "artist" {
+					releases = firstPositiveInt(
+						searchInt(itm["albums_count"]),
+						searchInt(itm["numberOfAlbums"]),
+						nestedSearchInt(itm, "albums", "total"),
+					)
+				}
+				appendUnique(searchResult{ID: id, Title: title, Artist: artist, Album: album, Date: date, Releases: releases, TrackCount: trackCount, Explicit: explicit})
+			}
+		case "beatport":
+			items, ok := page["items"].([]any)
+			if !ok {
+				continue
+			}
+			for _, raw := range items {
+				itm, ok := raw.(map[string]any)
+				if !ok {
+					continue
+				}
+				id := asString(itm["id"])
+				title := asString(itm["title"])
+				if title == "" {
+					title = asString(itm["name"])
+				}
+				if version := asString(itm["version"]); version != "" {
+					title += " (" + version + ")"
+				}
+				artist := nestedSearchString(itm, "artist", "name")
+				album := nestedSearchString(itm, "album", "title")
+				trackCount := firstPositiveInt(searchInt(itm["tracks_count"]), searchInt(itm["track_count"]))
+				date := firstNonEmpty(asString(itm["release_date_original"]), asString(itm["release_date"]), nestedSearchString(itm, "album", "release_date_original"))
+				appendUnique(searchResult{ID: id, Title: title, Artist: artist, Album: album, Date: date, TrackCount: trackCount})
+			}
 		}
 	}
 	return results

config.toml.example

@@ -68,6 +68,32 @@ password = ""
 # Optional cached Deezer refresh token. Managed automatically when available.
 refresh_token = ""
 
+[yandex]
+# Quality ladder:
+# 0 = LOW (HE-AAC/AAC when available), 1 = HIGH (AAC/MP3 192), 2/3/4 = LOSSLESS when available
+quality = 2
+# OAuth access token for api.music.yandex.net
+access_token = ""
+# Cached current account uid. Managed automatically when available.
+user_id = ""
+
+[beatport]
+# Quality ladder:
+# 1 = medium (AAC 128), 2 = high (AAC 256), 3/4 = lossless (FLAC 16/44.1)
+# medium-hls is intentionally not supported.
+quality = 3
+# If a release lists more artists than this, use "Various Artists" as album artist.
+# Set to -1 to disable this collapse.
+various_artists_threshold = 3
+# Beatport Streaming account credentials
+username = ""
+password = ""
+# Session values are managed automatically. Do not modify manually.
+access_token = ""
+refresh_token = ""
+# Unix timestamp when access_token expires
+token_expiry = 0
+
 [soundcloud]
 # Quality is currently provider-defined (keep 0)
 quality = 0
@@ -129,6 +155,8 @@ saved_max_width = -1
 set_playlist_to_album = true
 # Use playlist position as tracknumber for playlist items
 renumber_playlist_tracks = true
+# Separator used when a provider exposes multiple artists as separate values
+artist_separator = "; "
 # Metadata fields to exclude from tagging
 exclude = []
 

internal/app/app.go

@@ -21,10 +21,12 @@ import (
 	"streamrip-go/internal/jsonutil"
 	"streamrip-go/internal/naming"
 	"streamrip-go/internal/provider"
+	beatportprovider "streamrip-go/internal/provider/beatport"
 	deezerprovider "streamrip-go/internal/provider/deezer"
 	qobuzprovider "streamrip-go/internal/provider/qobuz"
 	soundcloudprovider "streamrip-go/internal/provider/soundcloud"
 	tidalprovider "streamrip-go/internal/provider/tidal"
+	yandexprovider "streamrip-go/internal/provider/yandex"
 	"streamrip-go/internal/store"
 	"streamrip-go/internal/verbose"
 )
@@ -109,9 +111,11 @@ func New(cfg *config.Config) (*Main, error) {
 	}
 
 	providers := map[string]provider.Client{
+		"beatport":   beatportprovider.New(cfg),
 		"qobuz":      qobuzprovider.New(cfg),
 		"tidal":      tidalprovider.New(cfg),
 		"deezer":     deezerprovider.New(cfg),
+		"yandex":     yandexprovider.New(cfg),
 		"soundcloud": soundcloudprovider.New(cfg),
 	}
 
@@ -201,7 +205,12 @@ func (m *Main) AddByID(ctx context.Context, source, mediaType, id string) error
 				case "artist":
 					return m.ripCollection(ctx, p, source, "Artist", id, meta)
 				case "label":
+					if source == "beatport" {
+						return m.ripTrackCollection(ctx, p, source, "Label", id, meta, false)
+					}
 					return m.ripCollection(ctx, p, source, "Label", id, meta)
+				case "chart":
+					return m.ripTrackCollection(ctx, p, source, "Chart", id, meta, true)
 				case "video":
 					return m.ripVideo(ctx, p, source, id, meta)
 				default:
@@ -325,6 +334,98 @@ func (m *Main) ripCollection(ctx context.Context, p provider.Client, source, kin
 	return nil
 }
 
+func (m *Main) ripTrackCollection(ctx context.Context, p provider.Client, source, kind, id string, meta map[string]any, playlistLike bool) error {
+	if err := m.requireSourceDownloadAuth(source); err != nil {
+		return err
+	}
+	name := titleFromMetadata(meta, id)
+	if n := jsonutil.StringFromAny(meta["name"]); n != "" {
+		name = n
+	}
+	base := m.Config.Session.Downloads.Folder
+	if m.Config.Session.Downloads.SourceSubdirectories {
+		base = filepath.Join(base, jsonutil.TitleCase(source))
+	}
+	folder := filepath.Join(base, naming.CleanName(name, naming.Config{RestrictCharacters: m.Config.Session.Filepaths.RestrictCharacters, TruncateTo: m.Config.Session.Filepaths.TruncateTo}))
+	tracksMap, ok := meta["tracks"].(map[string]any)
+	if !ok {
+		return fmt.Errorf("%s missing tracks data", strings.ToLower(kind))
+	}
+	rawItems := make([]any, 0)
+	switch items := tracksMap["items"].(type) {
+	case []any:
+		rawItems = items
+	case []map[string]any:
+		for _, item := range items {
+			rawItems = append(rawItems, item)
+		}
+	default:
+		return fmt.Errorf("%s tracks missing items", strings.ToLower(kind))
+	}
+	ids := make([]string, 0, len(rawItems))
+	for _, raw := range rawItems {
+		itm, ok := raw.(map[string]any)
+		if !ok {
+			continue
+		}
+		if id := jsonutil.StringFromAny(itm["id"]); id != "" {
+			ids = append(ids, id)
+		}
+	}
+	m.logf("%s: %s (%d tracks)\n", kind, name, len(ids))
+	failures := 0
+	runOne := func(i int, trackID string) {
+		opts := ripTrackOptions{albumFolder: folder, index: i, total: len(ids)}
+		if playlistLike {
+			opts.forPlaylist = true
+			opts.playlistName = name
+			opts.playlistPos = i
+		}
+		if err := m.ripTrack(ctx, p, source, trackID, "", opts); err != nil {
+			failures++
+			m.logf("track failed: id=%s reason=%v\n", trackID, err)
+		}
+	}
+	if !m.Config.Session.Downloads.Concurrency || m.Config.Session.Downloads.MaxConnections == 1 {
+		for i, trackID := range ids {
+			runOne(i+1, trackID)
+		}
+	} else {
+		maxWorkers := m.Config.Session.Downloads.MaxConnections
+		if maxWorkers <= 0 {
+			maxWorkers = 6
+		}
+		sem := make(chan struct{}, maxWorkers)
+		var wg sync.WaitGroup
+		var mu sync.Mutex
+		for i, trackID := range ids {
+			wg.Add(1)
+			sem <- struct{}{}
+			go func(pos int, tid string) {
+				defer wg.Done()
+				defer func() { <-sem }()
+				opts := ripTrackOptions{albumFolder: folder, index: pos, total: len(ids)}
+				if playlistLike {
+					opts.forPlaylist = true
+					opts.playlistName = name
+					opts.playlistPos = pos
+				}
+				if err := m.ripTrack(ctx, p, source, tid, "", opts); err != nil {
+					mu.Lock()
+					failures++
+					m.logf("track failed: id=%s reason=%v\n", tid, err)
+					mu.Unlock()
+				}
+			}(i+1, trackID)
+		}
+		wg.Wait()
+	}
+	if failures > 0 {
+		m.logf("%s done with %d failed track(s)\n", kind, failures)
+	}
+	return nil
+}
+
 func (m *Main) ripVideo(ctx context.Context, p provider.Client, source, videoID string, meta map[string]any) error {
 	alreadyDownloaded, err := m.Store.IsDownloaded(ctx, source, videoID)
 	if err == nil && alreadyDownloaded && !m.IgnoreDB {
@@ -888,6 +989,9 @@ func (m *Main) ripTrack(ctx context.Context, p provider.Client, source, id, fall
 			}
 			return m.DL.FileDeezerEncrypted(ctx, d.URL, outPath, trackID)
 		}
+		if d.Source == "yandex" && strings.EqualFold(strings.TrimSpace(d.Cipher), "AES_CTR") {
+			return m.DL.FileYandexEncrypted(ctx, d.URL, outPath, d.Key)
+		}
 		return m.DL.File(ctx, d.URL, outPath)
 	}
 	if err = downloadOnce(); err != nil {
@@ -919,8 +1023,11 @@ downloaded:
 				embedCoverPath = res.EmbedPath
 			}
 		}
-	} else if opts.albumFolder == "" {
+	} else if embedCoverPath == "" {
-		parent := filepath.Dir(outPath)
+		parent := opts.albumFolder
+		if parent == "" {
+			parent = filepath.Dir(outPath)
+		}
 		if res, prepErr := artwork.Prepare(ctx, m.DL, parent, trackMetaAlbum(meta), m.Config.Session.Artwork, false); prepErr == nil {
 			if res.EmbedPath != "" {
 				embedCoverPath = res.EmbedPath
@@ -964,6 +1071,10 @@ func (m *Main) qualityForSource(source string) int {
 		return m.Config.Session.Tidal.Quality
 	case "deezer":
 		return m.Config.Session.Deezer.Quality
+	case "yandex":
+		return m.Config.Session.Yandex.Quality
+	case "beatport":
+		return m.Config.Session.Beatport.Quality
 	case "soundcloud":
 		return m.Config.Session.Soundcloud.Quality
 	default:
@@ -994,6 +1105,8 @@ func (m *Main) qualityProfileForSource(source string) (int, string) {
 		default:
 			return 16, "44.1"
 		}
+	case "yandex":
+		return 16, "44.1"
 	default:
 		return 16, "44.1"
 	}
@@ -1245,6 +1358,7 @@ func buildTagMetadata(trackMeta map[string]any, title, source, trackID string, o
 	if artist == "" {
 		artist = jsonutil.NestedString(trackMeta, "artist", "name")
 	}
+	artistNames := stringSliceFromAny(trackMeta["artist_names"])
 	albumArtist := jsonutil.NestedString(trackMeta, "album", "artist", "name")
 	if albumArtist == "" {
 		albumArtist = artist
@@ -1304,6 +1418,11 @@ func buildTagMetadata(trackMeta map[string]any, title, source, trackID string, o
 	if genre == "" {
 		genre = jsonutil.StringFromAny(trackMeta["genre"])
 	}
+	initialKey := jsonutil.FirstNonEmpty(
+		jsonutil.StringFromAny(trackMeta["key"]),
+		jsonutil.StringFromAny(trackMeta["initialkey"]),
+	)
+	initialKey = normalizeInitialKey(initialKey)
 
 	comment := jsonutil.StringFromAny(trackMeta["comment"])
 	description := jsonutil.StringFromAny(trackMeta["description"])
@@ -1351,13 +1470,16 @@ func buildTagMetadata(trackMeta map[string]any, title, source, trackID string, o
 		Title:               title,
 		Album:               album,
 		Artist:              artist,
+		Artists:             artistNames,
 		AlbumArtist:         albumArtist,
+		OmitDiscTags:        opts.forPlaylist,
 		TrackNumber:         trackNumber,
 		DiscNumber:          discNumber,
 		TrackTotal:          trackTotal,
 		DiscTotal:           discTotal,
 		Date:                date,
 		Genre:               genre,
+		InitialKey:          initialKey,
 		Comment:             comment,
 		Description:         description,
 		Lyrics:              lyrics,
@@ -1374,6 +1496,85 @@ func buildTagMetadata(trackMeta map[string]any, title, source, trackID string, o
 	}
 }
 
+func stringSliceFromAny(v any) []string {
+	items, ok := v.([]string)
+	if ok {
+		return append([]string(nil), items...)
+	}
+	rawItems, ok := v.([]any)
+	if !ok {
+		return nil
+	}
+	out := make([]string, 0, len(rawItems))
+	for _, raw := range rawItems {
+		if s := strings.TrimSpace(jsonutil.StringFromAny(raw)); s != "" {
+			out = append(out, s)
+		}
+	}
+	return out
+}
+
+func normalizeInitialKey(in string) string {
+	s := strings.TrimSpace(in)
+	if s == "" {
+		return ""
+	}
+	parts := strings.Fields(s)
+	if len(parts) >= 2 {
+		switch strings.ToLower(parts[1]) {
+		case "major", "maj":
+			if root := normalizeMajorKeyRoot(parts[0]); root != "" {
+				return root
+			}
+		case "minor", "min":
+			if root := normalizeMinorKeyRoot(parts[0]); root != "" {
+				return root + "m"
+			}
+		}
+	}
+	if strings.HasSuffix(s, "m") && len(s) > 1 {
+		root := normalizeMinorKeyRoot(strings.TrimSuffix(s, "m"))
+		if root != "" {
+			return root + "m"
+		}
+	}
+	if root := normalizeMajorKeyRoot(s); root != "" {
+		return root
+	}
+	return s
+}
+
+func normalizeMajorKeyRoot(root string) string {
+	s := normalizeKeyRootCase(root)
+	switch s {
+	case "C", "Db", "D", "Eb", "E", "F", "F#", "Gb", "G", "Ab", "A", "Bb", "B":
+		return s
+	default:
+		return ""
+	}
+}
+
+func normalizeMinorKeyRoot(root string) string {
+	s := normalizeKeyRootCase(root)
+	switch s {
+	case "C", "C#", "D", "Eb", "E", "F", "F#", "G", "G#", "A", "Bb", "B":
+		return s
+	default:
+		return ""
+	}
+}
+
+func normalizeKeyRootCase(root string) string {
+	s := strings.TrimSpace(root)
+	if s == "" {
+		return ""
+	}
+	if len(s) >= 1 {
+		s = strings.ToUpper(s[:1]) + strings.ToLower(s[1:])
+	}
+	return s
+}
+
 func applyPlaylistMetadataOverrides(meta map[string]any, cfg config.MetadataConfig, playlistName string, position int) {
 	if cfg.RenumberPlaylistTracks && position > 0 {
 		meta["track_number"] = position

internal/app/app_test.go

@@ -525,6 +525,9 @@ func TestBuildTagMetadataPlaylistOmitsDiscTags(t *testing.T) {
 	if tags.DiscTotal != 0 {
 		t.Fatalf("disc total = %d, want 0", tags.DiscTotal)
 	}
+	if !tags.OmitDiscTags {
+		t.Fatalf("omit disc tags = %v, want true", tags.OmitDiscTags)
+	}
 }
 
 func TestTrackOutputPathFallsBackToDisc1(t *testing.T) {
@@ -861,6 +864,57 @@ func TestBuildTagMetadataReplayGainFallbacks(t *testing.T) {
 	}
 }
 
+func TestBuildTagMetadataInitialKey(t *testing.T) {
+	meta := map[string]any{
+		"key":       "E Minor",
+		"album":     map[string]any{"title": "Album"},
+		"performer": map[string]any{"name": "Artist"},
+	}
+
+	tags := buildTagMetadata(meta, "Song", "beatport", "42", ripTrackOptions{})
+	if tags.InitialKey != "Em" {
+		t.Fatalf("InitialKey=%q", tags.InitialKey)
+	}
+}
+
+func TestBuildTagMetadataArtistList(t *testing.T) {
+	meta := map[string]any{
+		"artist_names": []string{"Lost Frequencies", "Calum Scott", "Kungs"},
+		"performer":    map[string]any{"name": "Lost Frequencies, Calum Scott & Kungs"},
+		"album":        map[string]any{"title": "Album"},
+	}
+
+	tags := buildTagMetadata(meta, "Song", "beatport", "42", ripTrackOptions{})
+	if tags.Artist != "Lost Frequencies, Calum Scott & Kungs" {
+		t.Fatalf("artist=%q", tags.Artist)
+	}
+	if got := strings.Join(tags.Artists, ";"); got != "Lost Frequencies;Calum Scott;Kungs" {
+		t.Fatalf("artists=%q", got)
+	}
+}
+
+func TestNormalizeInitialKey(t *testing.T) {
+	tests := map[string]string{
+		"C Major":   "C",
+		"Db Major":  "Db",
+		"F# Major":  "F#",
+		"E Minor":   "Em",
+		"C# Minor":  "C#m",
+		"Bb Minor":  "Bbm",
+		"g# minor":  "G#m",
+		"F#m":       "F#m",
+		"Ab":        "Ab",
+		"Not A Key": "Not A Key",
+		"C# Major":  "C# Major",
+		"Db Minor":  "Db Minor",
+	}
+	for input, want := range tests {
+		if got := normalizeInitialKey(input); got != want {
+			t.Fatalf("normalizeInitialKey(%q)=%q want %q", input, got, want)
+		}
+	}
+}
+
 func TestBuildTagMetadataReplayGainFallsBackToDeezerGain(t *testing.T) {
 	meta := map[string]any{
 		"gain":      float64(-10),

internal/audio/tag/tagger.go

@@ -1,6 +1,7 @@
 package tag
 
 import (
+	"encoding/binary"
 	"fmt"
 	"os"
 	"os/exec"
@@ -13,13 +14,16 @@ type Metadata struct {
 	Title               string
 	Album               string
 	Artist              string
+	Artists             []string
 	AlbumArtist         string
+	OmitDiscTags        bool
 	TrackNumber         int
 	DiscNumber          int
 	TrackTotal          int
 	DiscTotal           int
 	Date                string
 	Genre               string
+	InitialKey          string
 	Comment             string
 	Description         string
 	Lyrics              string
@@ -47,9 +51,10 @@ func (t *Tagger) TagFLAC(path string, meta Metadata, coverPath string) error {
 	}
 
 	ext := strings.TrimPrefix(strings.ToLower(filepath.Ext(path)), ".")
+	forceMP4Muxer := shouldForceMP4Muxer(path, ext)
 	tmpPath := taggedTempPath(path)
 	runTag := func(cover string) ([]byte, error) {
-		args := buildFFmpegArgs(path, tmpPath, meta, cover, ext)
+		args := buildFFmpegArgs(path, tmpPath, meta, cover, ext, forceMP4Muxer)
 		cmd := exec.Command("ffmpeg", args...)
 		return cmd.CombinedOutput()
 	}
@@ -68,11 +73,14 @@ func (t *Tagger) TagFLAC(path string, meta Metadata, coverPath string) error {
 		_ = os.Remove(tmpPath)
 		return err
 	}
+	if err = applyMultiValueFLACTags(path, meta); err != nil {
+		return err
+	}
 
 	return nil
 }
 
-func buildFFmpegArgs(inputPath, outputPath string, meta Metadata, coverPath, ext string) []string {
+func buildFFmpegArgs(inputPath, outputPath string, meta Metadata, coverPath, ext string, forceMP4Muxer bool) []string {
 	args := []string{"-y", "-i", inputPath}
 	withCover := coverPath != "" && fileExists(coverPath) && supportsAttachedPicture(ext)
 	if withCover {
@@ -101,11 +109,38 @@ func buildFFmpegArgs(inputPath, outputPath string, meta Metadata, coverPath, ext
 		}
 		args = append(args, "-metadata", k+"="+v)
 	}
+	if meta.OmitDiscTags {
+		args = append(args,
+			"-metadata", "disc=",
+			"-metadata", "disk=",
+			"-metadata", "disctotal=",
+			"-metadata", "totaldiscs=",
+		)
+	}
+	if forceMP4Muxer {
+		args = append(args, "-f", "mp4")
+	}
 
 	args = append(args, outputPath)
 	return args
 }
 
+func shouldForceMP4Muxer(path, ext string) bool {
+	switch strings.TrimPrefix(strings.ToLower(ext), ".") {
+	case "m4a", "mp4":
+	default:
+		return false
+	}
+	if _, err := exec.LookPath("ffprobe"); err != nil {
+		return false
+	}
+	out, err := exec.Command("ffprobe", "-v", "error", "-select_streams", "a:0", "-show_entries", "stream=codec_name", "-of", "default=nokey=1:noprint_wrappers=1", path).Output()
+	if err != nil {
+		return false
+	}
+	return strings.EqualFold(strings.TrimSpace(string(out)), "flac")
+}
+
 func taggedTempPath(path string) string {
 	ext := filepath.Ext(path)
 	if ext == "" {
@@ -131,6 +166,7 @@ func toTags(meta Metadata) map[string]string {
 		"album_artist":          meta.AlbumArtist,
 		"date":                  meta.Date,
 		"genre":                 meta.Genre,
+		"INITIALKEY":            meta.InitialKey,
 		"comment":               meta.Comment,
 		"description":           meta.Description,
 		"lyrics":                meta.Lyrics,
@@ -146,12 +182,8 @@ func toTags(meta Metadata) map[string]string {
 		"source_artist_id":      meta.SourceArtistID,
 	}
 	if meta.TrackNumber > 0 {
-		if meta.TrackTotal > 0 {
-			tags["track"] = fmt.Sprintf("%02d/%02d", meta.TrackNumber, meta.TrackTotal)
-		} else {
 		tags["track"] = fmt.Sprintf("%02d", meta.TrackNumber)
 	}
-	}
 	if meta.TrackTotal > 0 {
 		tags["tracktotal"] = strconv.Itoa(meta.TrackTotal)
 	}
@@ -168,6 +200,150 @@ func toTags(meta Metadata) map[string]string {
 	return tags
 }
 
+func applyMultiValueFLACTags(path string, meta Metadata) error {
+	if strings.ToLower(strings.TrimPrefix(filepath.Ext(path), ".")) != "flac" || len(meta.Artists) == 0 {
+		return nil
+	}
+	st, err := os.Stat(path)
+	if err != nil {
+		return err
+	}
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return err
+	}
+	updated, err := replaceFLACVorbisComments(data, "ARTISTS", meta.Artists)
+	if err != nil {
+		return err
+	}
+	if updated == nil {
+		return nil
+	}
+	return os.WriteFile(path, updated, st.Mode())
+}
+
+type flacMetadataBlock struct {
+	isLast    bool
+	blockType byte
+	data      []byte
+}
+
+func replaceFLACVorbisComments(data []byte, key string, values []string) ([]byte, error) {
+	if len(data) < 4 || string(data[:4]) != "fLaC" {
+		return nil, fmt.Errorf("not a FLAC file")
+	}
+
+	blocks := []flacMetadataBlock{}
+	pos := 4
+	vorbisIndex := -1
+	for {
+		if pos+4 > len(data) {
+			return nil, fmt.Errorf("truncated FLAC metadata header")
+		}
+		header := data[pos]
+		blockType := header & 0x7f
+		length := int(data[pos+1])<<16 | int(data[pos+2])<<8 | int(data[pos+3])
+		pos += 4
+		if pos+length > len(data) {
+			return nil, fmt.Errorf("truncated FLAC metadata block")
+		}
+		if blockType == 4 {
+			vorbisIndex = len(blocks)
+		}
+		blocks = append(blocks, flacMetadataBlock{isLast: header&0x80 != 0, blockType: blockType, data: data[pos : pos+length]})
+		pos += length
+		if header&0x80 != 0 {
+			break
+		}
+	}
+	if vorbisIndex < 0 {
+		return nil, nil
+	}
+
+	commentBlock, err := replaceVorbisCommentValues(blocks[vorbisIndex].data, key, values)
+	if err != nil {
+		return nil, err
+	}
+	blocks[vorbisIndex].data = commentBlock
+
+	out := make([]byte, 0, len(data)+len(commentBlock)-len(blocks[vorbisIndex].data))
+	out = append(out, data[:4]...)
+	for _, block := range blocks {
+		if len(block.data) > 0xffffff {
+			return nil, fmt.Errorf("FLAC metadata block too large")
+		}
+		header := block.blockType
+		if block.isLast {
+			header |= 0x80
+		}
+		out = append(out, header, byte(len(block.data)>>16), byte(len(block.data)>>8), byte(len(block.data)))
+		out = append(out, block.data...)
+	}
+	out = append(out, data[pos:]...)
+	return out, nil
+}
+
+func replaceVorbisCommentValues(data []byte, key string, values []string) ([]byte, error) {
+	if len(data) < 8 {
+		return nil, fmt.Errorf("truncated Vorbis comment block")
+	}
+	pos := 0
+	vendorLength := int(binary.LittleEndian.Uint32(data[pos:]))
+	pos += 4
+	if pos+vendorLength+4 > len(data) {
+		return nil, fmt.Errorf("truncated Vorbis vendor string")
+	}
+	vendor := data[pos : pos+vendorLength]
+	pos += vendorLength
+	commentCount := int(binary.LittleEndian.Uint32(data[pos:]))
+	pos += 4
+
+	comments := make([][]byte, 0, commentCount+len(values))
+	for i := 0; i < commentCount; i++ {
+		if pos+4 > len(data) {
+			return nil, fmt.Errorf("truncated Vorbis comment length")
+		}
+		commentLength := int(binary.LittleEndian.Uint32(data[pos:]))
+		pos += 4
+		if pos+commentLength > len(data) {
+			return nil, fmt.Errorf("truncated Vorbis comment")
+		}
+		comment := data[pos : pos+commentLength]
+		pos += commentLength
+		if !vorbisCommentKeyEqual(comment, key) {
+			comments = append(comments, comment)
+		}
+	}
+	for _, value := range values {
+		value = strings.TrimSpace(value)
+		if value != "" {
+			comments = append(comments, []byte(key+"="+value))
+		}
+	}
+
+	out := make([]byte, 0, len(data))
+	out = appendUint32LE(out, uint32(len(vendor)))
+	out = append(out, vendor...)
+	out = appendUint32LE(out, uint32(len(comments)))
+	for _, comment := range comments {
+		out = appendUint32LE(out, uint32(len(comment)))
+		out = append(out, comment...)
+	}
+	return out, nil
+}
+
+func vorbisCommentKeyEqual(comment []byte, key string) bool {
+	idx := strings.IndexByte(string(comment), '=')
+	if idx < 0 {
+		return false
+	}
+	return strings.EqualFold(string(comment[:idx]), key)
+}
+
+func appendUint32LE(out []byte, v uint32) []byte {
+	return append(out, byte(v), byte(v>>8), byte(v>>16), byte(v>>24))
+}
+
 func normalizeCopyright(in string) string {
 	out := strings.ReplaceAll(in, "(c)", "©")
 	out = strings.ReplaceAll(out, "(C)", "©")

internal/audio/tag/tagger_test.go

@@ -1,6 +1,7 @@
 package tag
 
 import (
+	"encoding/binary"
 	"os"
 	"path/filepath"
 	"testing"
@@ -30,6 +31,7 @@ func TestToTagsTotalsAndSourceFields(t *testing.T) {
 		DiscNumber:          1,
 		DiscTotal:           2,
 		ISRC:                "USABC1234567",
+		InitialKey:          "Em",
 		ReplaygainTrackGain: "-7.25 dB",
 		ReplaygainAlbumGain: "-8.1 dB",
 		ReplaygainTrackPeak: "0.989",
@@ -37,7 +39,7 @@ func TestToTagsTotalsAndSourceFields(t *testing.T) {
 		SourcePlatform:      "qobuz",
 		SourceTrackID:       "t1",
 	})
-	if tags["track"] != "03/12" {
+	if tags["track"] != "03" {
 		t.Fatalf("track tag = %q", tags["track"])
 	}
 	if tags["disc"] != "1/2" {
@@ -49,6 +51,9 @@ func TestToTagsTotalsAndSourceFields(t *testing.T) {
 	if tags["isrc"] != "USABC1234567" {
 		t.Fatalf("isrc missing: %+v", tags)
 	}
+	if tags["INITIALKEY"] != "Em" {
+		t.Fatalf("INITIALKEY missing: %+v", tags)
+	}
 	if tags["source_platform"] != "QOBUZ" || tags["source_track_id"] != "t1" {
 		t.Fatalf("source tags missing: %+v", tags)
 	}
@@ -60,13 +65,109 @@ func TestToTagsTotalsAndSourceFields(t *testing.T) {
 	}
 }
 
+func TestToTagsArtistList(t *testing.T) {
+	tags := toTags(Metadata{Artist: "A, B & C", Artists: []string{"A", "B", "C"}})
+	if tags["artist"] != "A, B & C" {
+		t.Fatalf("artist tags = %+v", tags)
+	}
+	if _, ok := tags["ARTISTS"]; ok {
+		t.Fatalf("ARTISTS should be written as repeated FLAC comments, got %+v", tags)
+	}
+}
+
+func TestReplaceVorbisCommentValuesWritesRepeatedTags(t *testing.T) {
+	block := vorbisCommentBlock("vendor", []string{
+		"ARTIST=A, B & C",
+		"ARTISTS=A;B;C",
+		"TITLE=Song",
+	})
+
+	updated, err := replaceVorbisCommentValues(block, "ARTISTS", []string{"A", "B", "C"})
+	if err != nil {
+		t.Fatalf("replaceVorbisCommentValues() error = %v", err)
+	}
+	comments := readVorbisComments(t, updated)
+	want := []string{"ARTIST=A, B & C", "TITLE=Song", "ARTISTS=A", "ARTISTS=B", "ARTISTS=C"}
+	if len(comments) != len(want) {
+		t.Fatalf("comments=%#v want %#v", comments, want)
+	}
+	for i := range want {
+		if comments[i] != want[i] {
+			t.Fatalf("comments=%#v want %#v", comments, want)
+		}
+	}
+}
+
+func TestReplaceFLACVorbisComments(t *testing.T) {
+	vorbis := vorbisCommentBlock("vendor", []string{"ARTISTS=A;B", "TITLE=Song"})
+	flac := append([]byte("fLaC"), flacBlockHeader(true, 4, len(vorbis))...)
+	flac = append(flac, vorbis...)
+	flac = append(flac, []byte("audio")...)
+
+	updated, err := replaceFLACVorbisComments(flac, "ARTISTS", []string{"A", "B"})
+	if err != nil {
+		t.Fatalf("replaceFLACVorbisComments() error = %v", err)
+	}
+	if string(updated[len(updated)-5:]) != "audio" {
+		t.Fatalf("audio payload not preserved")
+	}
+	length := int(updated[5])<<16 | int(updated[6])<<8 | int(updated[7])
+	comments := readVorbisComments(t, updated[8:8+length])
+	want := []string{"TITLE=Song", "ARTISTS=A", "ARTISTS=B"}
+	if len(comments) != len(want) {
+		t.Fatalf("comments=%#v want %#v", comments, want)
+	}
+	for i := range want {
+		if comments[i] != want[i] {
+			t.Fatalf("comments=%#v want %#v", comments, want)
+		}
+	}
+}
+
+func vorbisCommentBlock(vendor string, comments []string) []byte {
+	out := []byte{}
+	out = appendUint32LE(out, uint32(len(vendor)))
+	out = append(out, vendor...)
+	out = appendUint32LE(out, uint32(len(comments)))
+	for _, comment := range comments {
+		out = appendUint32LE(out, uint32(len(comment)))
+		out = append(out, comment...)
+	}
+	return out
+}
+
+func flacBlockHeader(last bool, blockType byte, length int) []byte {
+	header := blockType
+	if last {
+		header |= 0x80
+	}
+	return []byte{header, byte(length >> 16), byte(length >> 8), byte(length)}
+}
+
+func readVorbisComments(t *testing.T, block []byte) []string {
+	t.Helper()
+	pos := 0
+	vendorLength := int(binary.LittleEndian.Uint32(block[pos:]))
+	pos += 4 + vendorLength
+	count := int(binary.LittleEndian.Uint32(block[pos:]))
+	pos += 4
+	comments := make([]string, 0, count)
+	for i := 0; i < count; i++ {
+		length := int(binary.LittleEndian.Uint32(block[pos:]))
+		pos += 4
+		comments = append(comments, string(block[pos:pos+length]))
+		pos += length
+	}
+	return comments
+}
+
 func TestBuildFFmpegArgsWithCover(t *testing.T) {
 	tmp := t.TempDir()
 	cover := filepath.Join(tmp, "cover.jpg")
 	if err := os.WriteFile(cover, []byte("x"), 0o644); err != nil {
 		t.Fatalf("write cover: %v", err)
 	}
-	args := buildFFmpegArgs("in.flac", "out.flac", Metadata{Title: "x"}, cover, "flac")
+	args := buildFFmpegArgs("in.flac", "out.flac", Metadata{Title: "x"}, cover, "flac", false)
 	foundInput2 := false
 	foundAttach := false
 	for i := 0; i < len(args)-1; i++ {
@@ -88,7 +189,7 @@ func TestBuildFFmpegArgsSkipsCoverForUnsupportedContainer(t *testing.T) {
 	if err := os.WriteFile(cover, []byte("x"), 0o644); err != nil {
 		t.Fatalf("write cover: %v", err)
 	}
-	args := buildFFmpegArgs("in.opus", "out.opus", Metadata{Title: "x"}, cover, "opus")
+	args := buildFFmpegArgs("in.opus", "out.opus", Metadata{Title: "x"}, cover, "opus", false)
 	for i := 0; i < len(args)-1; i++ {
 		if args[i] == "-i" && args[i+1] == cover {
 			t.Fatalf("unexpected cover input for opus: %v", args)
@@ -96,6 +197,38 @@ func TestBuildFFmpegArgsSkipsCoverForUnsupportedContainer(t *testing.T) {
 	}
 }
 
+func TestBuildFFmpegArgsClearsDiscTagsWhenRequested(t *testing.T) {
+	args := buildFFmpegArgs("in.flac", "out.flac", Metadata{Title: "x", OmitDiscTags: true}, "", "flac", false)
+	want := map[string]bool{
+		"disc=":       false,
+		"disk=":       false,
+		"disctotal=":  false,
+		"totaldiscs=": false,
+	}
+	for i := 0; i < len(args)-1; i++ {
+		if args[i] == "-metadata" {
+			if _, ok := want[args[i+1]]; ok {
+				want[args[i+1]] = true
+			}
+		}
+	}
+	for tag, found := range want {
+		if !found {
+			t.Fatalf("missing clear tag %q in args: %v", tag, args)
+		}
+	}
+}
+
+func TestBuildFFmpegArgsForcesMP4Muxer(t *testing.T) {
+	args := buildFFmpegArgs("in.m4a", "out.m4a", Metadata{Title: "x"}, "", "m4a", true)
+	for i := 0; i < len(args)-1; i++ {
+		if args[i] == "-f" && args[i+1] == "mp4" {
+			return
+		}
+	}
+	t.Fatalf("missing forced mp4 muxer args: %v", args)
+}
+
 func TestTaggedTempPathPreservesExtension(t *testing.T) {
 	if got := taggedTempPath("/tmp/song.flac"); got != "/tmp/song.tmp.flac" {
 		t.Fatalf("taggedTempPath(flac)=%q", got)

internal/config/config.go

@@ -24,6 +24,8 @@ type ConfigData struct {
 	Qobuz        QobuzConfig                  `toml:"qobuz"`
 	Tidal        TidalConfig                  `toml:"tidal"`
 	Deezer       DeezerConfig                 `toml:"deezer"`
+	Yandex       YandexConfig                 `toml:"yandex"`
+	Beatport     BeatportConfig               `toml:"beatport"`
 	Soundcloud   SoundcloudConfig             `toml:"soundcloud"`
 	Youtube      YoutubeConfig                `toml:"youtube"`
 	Database     DatabaseConfig               `toml:"database"`
@@ -77,6 +79,22 @@ type DeezerConfig struct {
 	RefreshToken               string `toml:"refresh_token"`
 }
 
+type YandexConfig struct {
+	Quality     int    `toml:"quality"`
+	AccessToken string `toml:"access_token"`
+	UserID      string `toml:"user_id"`
+}
+
+type BeatportConfig struct {
+	Quality                 int    `toml:"quality"`
+	VariousArtistsThreshold int    `toml:"various_artists_threshold"`
+	Username                string `toml:"username"`
+	Password                string `toml:"password"`
+	AccessToken             string `toml:"access_token"`
+	RefreshToken            string `toml:"refresh_token"`
+	TokenExpiry             int64  `toml:"token_expiry"`
+}
+
 type SoundcloudConfig struct {
 	Quality    int    `toml:"quality"`
 	ClientID   string `toml:"client_id"`
@@ -124,6 +142,7 @@ type ArtworkConfig struct {
 type MetadataConfig struct {
 	SetPlaylistToAlbum     bool     `toml:"set_playlist_to_album"`
 	RenumberPlaylistTracks bool     `toml:"renumber_playlist_tracks"`
+	ArtistSeparator        string   `toml:"artist_separator"`
 	Exclude                []string `toml:"exclude"`
 }
 
@@ -240,6 +259,13 @@ func DefaultConfigData() ConfigData {
 			Quality:                    2,
 			LowerQualityIfNotAvailable: true,
 		},
+		Yandex: YandexConfig{
+			Quality: 2,
+		},
+		Beatport: BeatportConfig{
+			Quality:                 3,
+			VariousArtistsThreshold: 3,
+		},
 		Soundcloud: SoundcloudConfig{
 			Quality: 0,
 		},
@@ -272,6 +298,7 @@ func DefaultConfigData() ConfigData {
 		Metadata: MetadataConfig{
 			SetPlaylistToAlbum:     true,
 			RenumberPlaylistTracks: true,
+			ArtistSeparator:        "; ",
 			Exclude:                []string{},
 		},
 		Filepaths: FilepathsConfig{

internal/download/downloader.go

@@ -3,8 +3,10 @@ package download
 import (
 	"bufio"
 	"context"
+	"crypto/aes"
 	"crypto/cipher"
 	"crypto/md5"
+	"encoding/hex"
 	"fmt"
 	"io"
 	"net/http"
@@ -182,6 +184,120 @@ func (d *Downloader) FileDeezerEncrypted(ctx context.Context, sourceURL, outputP
 	return nil
 }
 
+func (d *Downloader) FileYandexEncrypted(ctx context.Context, sourceURL, outputPath, key string) error {
+	logDownloadStart(sourceURL, outputPath)
+	if err := os.MkdirAll(filepath.Dir(outputPath), 0o755); err != nil {
+		return err
+	}
+	keyBytes, err := hex.DecodeString(strings.TrimSpace(key))
+	if err != nil {
+		return fmt.Errorf("invalid yandex key: %w", err)
+	}
+	if len(keyBytes) != 16 {
+		return fmt.Errorf("invalid yandex key length: %d", len(keyBytes))
+	}
+	block, err := aes.NewCipher(keyBytes)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, sourceURL, nil)
+	if err != nil {
+		return err
+	}
+	resp, err := d.http.Do(req)
+	if err != nil {
+		return err
+	}
+	defer func() { _ = resp.Body.Close() }()
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("download failed: status=%d", resp.StatusCode)
+	}
+	out, err := os.Create(outputPath)
+	if err != nil {
+		return err
+	}
+	success := false
+	defer func() {
+		_ = out.Close()
+		if !success {
+			_ = os.Remove(outputPath)
+		}
+	}()
+
+	var bar *mpb.Bar
+	if d.ProgressEnabled() {
+		d.barStarted.Store(1)
+		desc := shortenName(filepath.Base(outputPath), 54)
+		if resp.ContentLength > 0 {
+			bar = d.progress.AddBar(
+				resp.ContentLength,
+				mpb.PrependDecorators(
+					decor.Name(desc+" ", decor.WC{W: 56, C: decor.DSyncWidth | decor.DindentRight}),
+					decor.Percentage(decor.WCSyncWidthR),
+				),
+				mpb.AppendDecorators(
+					decor.CountersKibiByte("% .1f / % .1f", decor.WCSyncWidthR),
+					decor.Name(" | ", decor.WCSyncWidth),
+					decor.AverageSpeed(decor.SizeB1024(0), "% .1f", decor.WCSyncWidthR),
+					decor.Name(" | ETA ", decor.WCSyncWidth),
+					decor.AverageETA(decor.ET_STYLE_GO, decor.WCSyncWidthR),
+				),
+				mpb.BarRemoveOnComplete(),
+			)
+		} else {
+			bar = d.progress.AddSpinner(
+				0,
+				mpb.PrependDecorators(
+					decor.Name(desc+" ", decor.WC{W: 56, C: decor.DSyncWidth | decor.DindentRight}),
+				),
+				mpb.AppendDecorators(
+					decor.CurrentKibiByte("% .1f", decor.WCSyncWidthR),
+					decor.Name(" | ", decor.WCSyncWidth),
+					decor.Elapsed(decor.ET_STYLE_GO, decor.WCSyncWidthR),
+				),
+				mpb.BarRemoveOnComplete(),
+			)
+			defer bar.SetTotal(-1, true)
+		}
+		defer func() {
+			if !success && bar != nil {
+				bar.Abort(true)
+			}
+		}()
+	}
+
+	stream := cipher.NewCTR(block, make([]byte, aes.BlockSize))
+	reader := &cipher.StreamReader{S: stream, R: resp.Body}
+	buf := make([]byte, downloadBufferSize)
+	totalWritten := int64(0)
+	for {
+		n, readErr := reader.Read(buf)
+		if n > 0 {
+			if _, writeErr := out.Write(buf[:n]); writeErr != nil {
+				return writeErr
+			}
+			totalWritten += int64(n)
+			if bar != nil {
+				bar.IncrBy(n)
+			}
+		}
+		if readErr != nil {
+			if readErr == io.EOF {
+				break
+			}
+			return readErr
+		}
+	}
+	if resp.ContentLength > 0 && totalWritten != resp.ContentLength {
+		return io.ErrUnexpectedEOF
+	}
+	if err = out.Sync(); err != nil {
+		return err
+	}
+	success = true
+	return nil
+}
+
 func (d *Downloader) file(ctx context.Context, sourceURL, outputPath string, allowProgress bool, includeVideo bool) error {
 	logDownloadStart(sourceURL, outputPath)
 	if err := os.MkdirAll(filepath.Dir(outputPath), 0o755); err != nil {

internal/download/downloader_test.go

@@ -2,8 +2,10 @@ package download
 
 import (
 	"context"
+	"crypto/aes"
 	"crypto/cipher"
 	"errors"
+	"encoding/hex"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -110,6 +112,45 @@ func TestFileDeezerEncrypted(t *testing.T) {
 	}
 }
 
+func TestFileYandexEncrypted(t *testing.T) {
+	plain := make([]byte, 8192+333)
+	for i := range plain {
+		plain[i] = byte((i * 11) % 251)
+	}
+	keyHex := "00112233445566778899aabbccddeeff"
+	key, err := hex.DecodeString(keyHex)
+	if err != nil {
+		t.Fatalf("DecodeString() error = %v", err)
+	}
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		t.Fatalf("NewCipher() error = %v", err)
+	}
+	enc := make([]byte, len(plain))
+	copy(enc, plain)
+	stream := cipher.NewCTR(block, make([]byte, aes.BlockSize))
+	stream.XORKeyStream(enc, enc)
+
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		_, _ = w.Write(enc)
+	}))
+	defer ts.Close()
+
+	d := NewWithOptions(true, false, 0)
+	out := filepath.Join(t.TempDir(), "x", "a.m4a")
+	if err = d.FileYandexEncrypted(context.Background(), ts.URL, out, keyHex); err != nil {
+		t.Fatalf("FileYandexEncrypted() error = %v", err)
+	}
+
+	got, err := os.ReadFile(out)
+	if err != nil {
+		t.Fatalf("ReadFile() error = %v", err)
+	}
+	if string(got) != string(plain) {
+		t.Fatalf("decrypted file mismatch")
+	}
+}
+
 func TestDownloaderFileTruncatedResponseRemovesPartialFile(t *testing.T) {
 	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		w.Header().Set("Content-Length", "10")
@@ -160,6 +201,15 @@ func TestFileDeezerEncryptedBadStatus(t *testing.T) {
 	}
 }
 
+func TestFileYandexEncryptedBadKey(t *testing.T) {
+	d := NewWithOptions(true, false, 0)
+	out := filepath.Join(t.TempDir(), "x", "a.m4a")
+	err := d.FileYandexEncrypted(context.Background(), "https://example.com/file", out, "abcd")
+	if err == nil || !strings.Contains(err.Error(), "invalid yandex key length") {
+		t.Fatalf("expected key length error, got %v", err)
+	}
+}
+
 func TestDownloaderFileContextCancellationRemovesPartialFile(t *testing.T) {
 	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/octet-stream")

internal/provider/beatport/client.go

@@ -0,0 +1,825 @@
+package beatport
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"streamrip-go/internal/config"
+	"streamrip-go/internal/jsonutil"
+	"streamrip-go/internal/netutil"
+	"streamrip-go/internal/provider"
+	"streamrip-go/internal/ratelimit"
+)
+
+const (
+	baseURL       = "https://api.beatport.com/v4"
+	clientID      = "ryZ8LuyQVPqbK2mBX2Hwt4qSMtnWuTYSqBPO92yQ"
+	tokenEndpoint = "/auth/o/token/"
+	authEndpoint  = "/auth/o/authorize/"
+	loginEndpoint = "/auth/login/"
+)
+
+var (
+	errMissingCredentials = errors.New("missing beatport credentials")
+	errNotLoggedIn        = errors.New("beatport client not logged in")
+)
+
+type Client struct {
+	cfg       *config.Config
+	http      *http.Client
+	limiter   *ratelimit.Limiter
+	baseURL   string
+	loggedIn  bool
+	sessionID string
+}
+
+func New(cfg *config.Config) *Client {
+	h := netutil.NewHTTPClient(40*time.Second, cfg.Session.Downloads.VerifySSL, cfg.Session.Downloads.MaxConnections)
+	h.CheckRedirect = func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse }
+	return &Client{
+		cfg:     cfg,
+		http:    h,
+		limiter: ratelimit.New(cfg.Session.Downloads.RequestsPerMinute),
+		baseURL: baseURL,
+	}
+}
+
+func (c *Client) Source() string { return "beatport" }
+
+func (c *Client) LoggedIn() bool { return c.loggedIn }
+
+func (c *Client) Login(ctx context.Context) error {
+	b := &c.cfg.Session.Beatport
+	b.Username = strings.TrimSpace(b.Username)
+	b.Password = strings.TrimSpace(b.Password)
+	if b.Username == "" || b.Password == "" {
+		return errMissingCredentials
+	}
+	if strings.TrimSpace(b.AccessToken) != "" && time.Now().Unix()+300 < b.TokenExpiry {
+		c.loggedIn = true
+		return nil
+	}
+	if strings.TrimSpace(b.RefreshToken) != "" {
+		if err := c.refresh(ctx); err == nil {
+			c.loggedIn = true
+			return nil
+		}
+	}
+	if err := c.loginPasswordFlow(ctx); err != nil {
+		return err
+	}
+	c.loggedIn = true
+	return nil
+}
+
+func (c *Client) GetMetadata(ctx context.Context, item, mediaType string) (map[string]any, error) {
+	if !c.loggedIn {
+		return nil, errNotLoggedIn
+	}
+	switch mediaType {
+	case "track":
+		track, err := c.getMap(ctx, "/catalog/tracks/"+url.PathEscape(strings.TrimSpace(item))+"/", nil)
+		if err != nil {
+			return nil, err
+		}
+		if relID := jsonutil.NestedString(track, "release", "id"); relID != "" {
+			if rel, relErr := c.getRelease(ctx, relID); relErr == nil {
+				track["release"] = rel
+			}
+		}
+		return c.normalizeTrack(track), nil
+	case "album":
+		return c.getAlbumMetadata(ctx, item)
+	case "playlist":
+		return c.getPlaylistMetadata(ctx, item)
+	case "chart":
+		return c.getChartMetadata(ctx, strings.TrimPrefix(strings.TrimSpace(item), "chart:"))
+	case "artist":
+		artist, err := c.getMap(ctx, "/catalog/artists/"+url.PathEscape(strings.TrimSpace(item))+"/", nil)
+		if err != nil {
+			return nil, err
+		}
+		releases, err := c.getPaginated(ctx, "/catalog/releases/", url.Values{"artist_id": []string{strings.TrimSpace(item)}})
+		if err != nil {
+			return nil, err
+		}
+		return c.releaseCollectionMetadata(artist, releases), nil
+	case "label":
+		label, err := c.getMap(ctx, "/catalog/labels/"+url.PathEscape(strings.TrimSpace(item))+"/", nil)
+		if err != nil {
+			return nil, err
+		}
+		tracks, err := c.getTrackCollection(ctx, url.Values{"label_id": []string{strings.TrimSpace(item)}})
+		if err != nil {
+			return nil, err
+		}
+		return c.collectionMetadata(label, tracks), nil
+	default:
+		return nil, fmt.Errorf("unsupported beatport media type %q", mediaType)
+	}
+}
+
+func (c *Client) Search(ctx context.Context, mediaType, query string, limit int) ([]map[string]any, error) {
+	if !c.loggedIn {
+		return nil, errNotLoggedIn
+	}
+	if limit <= 0 {
+		limit = 25
+	}
+	var key string
+	switch mediaType {
+	case "track":
+		key = "tracks"
+	case "album":
+		key = "releases"
+	case "label":
+		key = "labels"
+	default:
+		return nil, fmt.Errorf("unsupported beatport search media type %q", mediaType)
+	}
+	params := url.Values{}
+	params.Set("q", query)
+	params.Set("order_by", "-publish_date")
+	params.Set("is_available_for_streaming", "true")
+	resp, err := c.getMap(ctx, "/catalog/search/", params)
+	if err != nil {
+		return nil, err
+	}
+	items := sliceAny(resp[key])
+	if limit < len(items) {
+		items = items[:limit]
+	}
+	return []map[string]any{{"items": c.normalizeSearchItems(mediaType, items)}}, nil
+}
+
+func (c *Client) GetDownloadable(ctx context.Context, item string, quality int) (*provider.Downloadable, error) {
+	if !c.loggedIn {
+		return nil, errNotLoggedIn
+	}
+	q := beatportQuality(quality)
+	params := url.Values{"quality": []string{q}}
+	resp, err := c.getMap(ctx, "/catalog/tracks/"+url.PathEscape(strings.TrimSpace(item))+"/download/", params)
+	if err != nil {
+		return nil, err
+	}
+	location := strings.TrimSpace(jsonutil.StringFromAny(resp["location"]))
+	if location == "" {
+		return nil, errors.New("beatport download response missing location")
+	}
+	streamQuality := strings.TrimSpace(jsonutil.StringFromAny(resp["stream_quality"]))
+	profile, ext := audioProfile(q, streamQuality)
+	return &provider.Downloadable{URL: location, Extension: ext, Source: "beatport", TrackID: strings.TrimSpace(item), Audio: profile}, nil
+}
+
+func (c *Client) Close() error { return nil }
+
+func (c *Client) getAlbumMetadata(ctx context.Context, id string) (map[string]any, error) {
+	release, err := c.getRelease(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	tracks, err := c.getReleaseTracks(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	return c.normalizeRelease(release, tracks), nil
+}
+
+func (c *Client) getPlaylistMetadata(ctx context.Context, id string) (map[string]any, error) {
+	if strings.HasPrefix(strings.TrimSpace(id), "chart:") {
+		return c.getChartMetadata(ctx, strings.TrimPrefix(strings.TrimSpace(id), "chart:"))
+	}
+	playlist, err := c.getMap(ctx, "/catalog/playlists/"+url.PathEscape(strings.TrimSpace(id))+"/", nil)
+	if err != nil {
+		return nil, err
+	}
+	items, err := c.getPaginated(ctx, "/catalog/playlists/"+url.PathEscape(strings.TrimSpace(id))+"/tracks/", nil)
+	if err != nil {
+		return nil, err
+	}
+	tracks := make([]any, 0, len(items))
+	for _, raw := range items {
+		m, ok := raw.(map[string]any)
+		if !ok {
+			continue
+		}
+		if track, ok := m["track"].(map[string]any); ok {
+			tracks = append(tracks, c.normalizeTrackListItem(track))
+		}
+	}
+	return playlistMetadata(playlist, tracks), nil
+}
+
+func (c *Client) getChartMetadata(ctx context.Context, id string) (map[string]any, error) {
+	chart, err := c.getMap(ctx, "/catalog/charts/"+url.PathEscape(strings.TrimSpace(id))+"/", nil)
+	if err != nil {
+		return nil, err
+	}
+	tracks, err := c.getPaginated(ctx, "/catalog/charts/"+url.PathEscape(strings.TrimSpace(id))+"/tracks/", nil)
+	if err != nil {
+		return nil, err
+	}
+	normalized := make([]any, 0, len(tracks))
+	for _, raw := range tracks {
+		if track, ok := raw.(map[string]any); ok {
+			normalized = append(normalized, c.normalizeTrackListItem(track))
+		}
+	}
+	return playlistMetadata(chart, normalized), nil
+}
+
+func (c *Client) getRelease(ctx context.Context, id string) (map[string]any, error) {
+	return c.getMap(ctx, "/catalog/releases/"+url.PathEscape(strings.TrimSpace(id))+"/", nil)
+}
+
+func (c *Client) getReleaseTracks(ctx context.Context, id string) ([]any, error) {
+	items, err := c.getPaginated(ctx, "/catalog/releases/"+url.PathEscape(strings.TrimSpace(id))+"/tracks/", nil)
+	if err != nil {
+		return nil, err
+	}
+	for _, raw := range items {
+		if track, ok := raw.(map[string]any); ok {
+			track["release"] = map[string]any{"id": id}
+		}
+	}
+	return items, nil
+}
+
+func (c *Client) getTrackCollection(ctx context.Context, params url.Values) ([]any, error) {
+	return c.getPaginated(ctx, "/catalog/tracks/", params)
+}
+
+func (c *Client) getPaginated(ctx context.Context, endpoint string, params url.Values) ([]any, error) {
+	if params == nil {
+		params = url.Values{}
+	} else {
+		params = cloneValues(params)
+	}
+	out := make([]any, 0)
+	for page := 1; ; page++ {
+		params.Set("page", strconv.Itoa(page))
+		resp, err := c.getMap(ctx, endpoint, params)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, sliceAny(resp["results"])...)
+		if strings.TrimSpace(jsonutil.StringFromAny(resp["next"])) == "" {
+			break
+		}
+	}
+	return out, nil
+}
+
+func (c *Client) getMap(ctx context.Context, endpoint string, params url.Values) (map[string]any, error) {
+	resp, err := c.apiRequest(ctx, http.MethodGet, endpoint, params, nil, "")
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+func (c *Client) apiRequest(ctx context.Context, method, endpoint string, params url.Values, payload any, contentType string) (map[string]any, error) {
+	if err := c.ensureToken(ctx); err != nil {
+		return nil, err
+	}
+	resp, status, err := c.rawRequest(ctx, method, endpoint, params, payload, contentType, true)
+	if err != nil {
+		return nil, err
+	}
+	if status == http.StatusUnauthorized {
+		c.cfg.Session.Beatport.TokenExpiry = 0
+		if err = c.refresh(ctx); err != nil {
+			if loginErr := c.loginPasswordFlow(ctx); loginErr != nil {
+				return nil, err
+			}
+		}
+		resp, status, err = c.rawRequest(ctx, method, endpoint, params, payload, contentType, true)
+		if err != nil {
+			return nil, err
+		}
+	}
+	if status < 200 || status >= 300 {
+		return nil, fmt.Errorf("beatport request failed: status=%d body=%v", status, resp)
+	}
+	return resp, nil
+}
+
+func (c *Client) ensureToken(ctx context.Context) error {
+	if strings.TrimSpace(c.cfg.Session.Beatport.AccessToken) != "" && time.Now().Unix()+300 < c.cfg.Session.Beatport.TokenExpiry {
+		return nil
+	}
+	if strings.TrimSpace(c.cfg.Session.Beatport.RefreshToken) != "" {
+		if err := c.refresh(ctx); err == nil {
+			return nil
+		}
+	}
+	return c.loginPasswordFlow(ctx)
+}
+
+func (c *Client) loginPasswordFlow(ctx context.Context) error {
+	b := &c.cfg.Session.Beatport
+	if strings.TrimSpace(b.Username) == "" || strings.TrimSpace(b.Password) == "" {
+		return errMissingCredentials
+	}
+	loginResp, status, err := c.rawRequest(ctx, http.MethodPost, loginEndpoint, nil, map[string]string{"username": b.Username, "password": b.Password}, "application/json", false)
+	if err != nil {
+		return err
+	}
+	if status < 200 || status >= 300 {
+		return fmt.Errorf("beatport login failed: status=%d body=%v", status, loginResp)
+	}
+	if c.sessionID == "" {
+		return errors.New("beatport login response missing sessionid cookie")
+	}
+	code, err := c.authorize(ctx)
+	if err != nil {
+		return err
+	}
+	return c.issueToken(ctx, map[string]string{"client_id": clientID, "grant_type": "authorization_code", "code": code})
+}
+
+func (c *Client) authorize(ctx context.Context) (string, error) {
+	params := url.Values{"client_id": []string{clientID}, "response_type": []string{"code"}}
+	resp, status, err := c.rawRequest(ctx, http.MethodGet, authEndpoint, params, nil, "", false)
+	if err != nil {
+		return "", err
+	}
+	if status != http.StatusFound {
+		return "", fmt.Errorf("beatport authorize failed: status=%d body=%v", status, resp)
+	}
+	code := strings.TrimSpace(jsonutil.StringFromAny(resp["code"]))
+	if code == "" {
+		return "", errors.New("beatport authorize redirect missing code")
+	}
+	return code, nil
+}
+
+func (c *Client) refresh(ctx context.Context) error {
+	b := &c.cfg.Session.Beatport
+	return c.issueToken(ctx, map[string]string{"client_id": clientID, "grant_type": "refresh_token", "refresh_token": b.RefreshToken})
+}
+
+func (c *Client) issueToken(ctx context.Context, payload map[string]string) error {
+	resp, status, err := c.rawRequest(ctx, http.MethodPost, tokenEndpoint, nil, payload, "application/x-www-form-urlencoded", false)
+	if err != nil {
+		return err
+	}
+	if status < 200 || status >= 300 {
+		return fmt.Errorf("beatport token request failed: status=%d body=%v", status, resp)
+	}
+	access := strings.TrimSpace(jsonutil.StringFromAny(resp["access_token"]))
+	refresh := strings.TrimSpace(jsonutil.StringFromAny(resp["refresh_token"]))
+	if access == "" {
+		return errors.New("beatport token response missing access_token")
+	}
+	expiresIn := int64(jsonutil.IntFromAny(resp["expires_in"]))
+	if expiresIn <= 0 {
+		expiresIn = 3600
+	}
+	c.cfg.Session.Beatport.AccessToken = access
+	if refresh != "" {
+		c.cfg.Session.Beatport.RefreshToken = refresh
+	}
+	c.cfg.Session.Beatport.TokenExpiry = time.Now().Unix() + expiresIn
+	c.cfg.File.Beatport.AccessToken = c.cfg.Session.Beatport.AccessToken
+	c.cfg.File.Beatport.RefreshToken = c.cfg.Session.Beatport.RefreshToken
+	c.cfg.File.Beatport.TokenExpiry = c.cfg.Session.Beatport.TokenExpiry
+	_ = c.cfg.SaveFile()
+	return nil
+}
+
+func (c *Client) rawRequest(ctx context.Context, method, endpoint string, params url.Values, payload any, contentType string, auth bool) (map[string]any, int, error) {
+	if c.limiter != nil {
+		if err := c.limiter.Wait(ctx); err != nil {
+			return nil, 0, err
+		}
+	}
+	var body io.Reader
+	if payload != nil {
+		switch contentType {
+		case "application/json":
+			b, err := json.Marshal(payload)
+			if err != nil {
+				return nil, 0, err
+			}
+			body = bytes.NewReader(b)
+		case "application/x-www-form-urlencoded":
+			vals := url.Values{}
+			for k, v := range payload.(map[string]string) {
+				vals.Set(k, v)
+			}
+			body = strings.NewReader(vals.Encode())
+		default:
+			return nil, 0, fmt.Errorf("unsupported beatport content type %q", contentType)
+		}
+	}
+	u, err := url.Parse(strings.TrimRight(c.baseURL, "/") + endpoint)
+	if err != nil {
+		return nil, 0, err
+	}
+	if len(params) > 0 {
+		u.RawQuery = params.Encode()
+	}
+	req, err := http.NewRequestWithContext(ctx, method, u.String(), body)
+	if err != nil {
+		return nil, 0, err
+	}
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36")
+	if contentType != "" {
+		req.Header.Set("Content-Type", contentType)
+	}
+	if auth && strings.TrimSpace(c.cfg.Session.Beatport.AccessToken) != "" {
+		req.Header.Set("Authorization", "Bearer "+strings.TrimSpace(c.cfg.Session.Beatport.AccessToken))
+	}
+	if endpoint == authEndpoint && c.sessionID != "" {
+		req.Header.Set("Cookie", "sessionid="+c.sessionID)
+	}
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer func() { _ = resp.Body.Close() }()
+	if endpoint == loginEndpoint {
+		for _, cookie := range resp.Cookies() {
+			if cookie.Name == "sessionid" {
+				c.sessionID = cookie.Value
+				break
+			}
+		}
+	}
+	if endpoint == authEndpoint && resp.StatusCode == http.StatusFound {
+		loc := resp.Header.Get("Location")
+		parsed, parseErr := url.Parse(loc)
+		if parseErr == nil && strings.TrimSpace(parsed.Query().Get("code")) != "" {
+			return map[string]any{"code": parsed.Query().Get("code")}, resp.StatusCode, nil
+		}
+		return map[string]any{}, resp.StatusCode, nil
+	}
+	var out map[string]any
+	if err = json.NewDecoder(resp.Body).Decode(&out); err != nil {
+		if errors.Is(err, io.EOF) {
+			return map[string]any{}, resp.StatusCode, nil
+		}
+		if resp.StatusCode >= 200 && resp.StatusCode < 300 {
+			return nil, resp.StatusCode, err
+		}
+		return map[string]any{}, resp.StatusCode, nil
+	}
+	return out, resp.StatusCode, nil
+}
+
+func (c *Client) normalizeRelease(raw map[string]any, tracks []any) map[string]any {
+	id := jsonutil.StringFromAny(raw["id"])
+	artist := c.releaseArtistNameForTracks(raw["artists"], tracks)
+	trackRelease := cloneMap(raw)
+	trackRelease["album_artist_name"] = artist
+	items := make([]any, 0, len(tracks))
+	for _, entry := range tracks {
+		track, ok := entry.(map[string]any)
+		if !ok {
+			continue
+		}
+		track["release"] = trackRelease
+		items = append(items, c.normalizeTrack(track))
+	}
+	return map[string]any{
+		"id":                    id,
+		"title":                 jsonutil.StringFromAny(raw["name"]),
+		"artist":                map[string]any{"name": artist},
+		"release_date_original": jsonutil.StringFromAny(raw["new_release_date"]),
+		"tracks_count":          firstPositiveInt(jsonutil.IntFromAny(raw["track_count"]), len(items)),
+		"maximum_bit_depth":     16,
+		"maximum_sampling_rate": "44.1",
+		"image":                 imageMap(raw["image"]),
+		"tracks":                map[string]any{"items": items},
+		"upc":                   jsonutil.StringFromAny(raw["upc"]),
+		"label":                 raw["label"],
+	}
+}
+
+func (c *Client) normalizeTrack(raw map[string]any) map[string]any {
+	release := mapAny(raw["release"])
+	trackArtistNames := artistNames(raw["artists"])
+	artistName := displayArtistNames(trackArtistNames)
+	artistID := firstArtistID(raw["artists"])
+	albumArtist := strings.TrimSpace(jsonutil.StringFromAny(release["album_artist_name"]))
+	if albumArtist == "" {
+		albumArtist = c.releaseArtistName(release["artists"])
+	}
+	if albumArtist == "" {
+		albumArtist = artistName
+	}
+	genreName := jsonutil.NestedString(raw, "genre", "name")
+	if sub := jsonutil.NestedString(raw, "sub_genre", "name"); sub != "" {
+		genreName = sub
+	}
+	date := jsonutil.FirstNonEmpty(jsonutil.StringFromAny(release["new_release_date"]), jsonutil.StringFromAny(raw["publish_date"]))
+	track := map[string]any{
+		"id":                    jsonutil.StringFromAny(raw["id"]),
+		"title":                 jsonutil.StringFromAny(raw["name"]),
+		"version":               jsonutil.StringFromAny(raw["mix_name"]),
+		"artist":                map[string]any{"id": artistID, "name": artistName},
+		"performer":             map[string]any{"id": artistID, "name": artistName},
+		"artist_names":          trackArtistNames,
+		"album":                 map[string]any{"id": jsonutil.StringFromAny(release["id"]), "title": jsonutil.StringFromAny(release["name"]), "artist": map[string]any{"name": albumArtist}, "image": imageMap(release["image"]), "release_date_original": date},
+		"track_number":          jsonutil.IntFromAny(raw["number"]),
+		"tracks_count":          jsonutil.IntFromAny(release["track_count"]),
+		"release_date_original": date,
+		"genre":                 map[string]any{"name": genreName},
+		"isrc":                  jsonutil.StringFromAny(raw["isrc"]),
+		"bpm":                   jsonutil.IntFromAny(raw["bpm"]),
+		"source_track_id":       jsonutil.StringFromAny(raw["id"]),
+		"source_album_id":       jsonutil.StringFromAny(release["id"]),
+		"source_artist_id":      artistID,
+		"maximum_bit_depth":     16,
+		"maximum_sampling_rate": "44.1",
+	}
+	if keyName := jsonutil.NestedString(raw, "key", "name"); keyName != "" {
+		track["key"] = keyName
+	}
+	return track
+}
+
+func (c *Client) normalizeTrackListItem(raw map[string]any) map[string]any {
+	names := artistNames(raw["artists"])
+	return map[string]any{
+		"id":           jsonutil.StringFromAny(raw["id"]),
+		"title":        jsonutil.StringFromAny(raw["name"]),
+		"version":      jsonutil.StringFromAny(raw["mix_name"]),
+		"artist":       map[string]any{"name": displayArtistNames(names)},
+		"album":        map[string]any{"id": jsonutil.NestedString(raw, "release", "id"), "title": jsonutil.NestedString(raw, "release", "name")},
+		"track_number": jsonutil.IntFromAny(raw["number"]),
+	}
+}
+
+func (c *Client) collectionMetadata(raw map[string]any, tracks []any) map[string]any {
+	items := make([]any, 0, len(tracks))
+	for _, entry := range tracks {
+		track, ok := entry.(map[string]any)
+		if !ok {
+			continue
+		}
+		items = append(items, c.normalizeTrackListItem(track))
+	}
+	return map[string]any{
+		"id":           jsonutil.StringFromAny(raw["id"]),
+		"name":         jsonutil.StringFromAny(raw["name"]),
+		"title":        jsonutil.StringFromAny(raw["name"]),
+		"tracks_count": len(items),
+		"tracks":       map[string]any{"items": items},
+	}
+}
+
+func (c *Client) releaseCollectionMetadata(raw map[string]any, releases []any) map[string]any {
+	items := make([]any, 0, len(releases))
+	for _, entry := range releases {
+		release, ok := entry.(map[string]any)
+		if !ok {
+			continue
+		}
+		id := strings.TrimSpace(jsonutil.StringFromAny(release["id"]))
+		if id == "" {
+			continue
+		}
+		items = append(items, map[string]any{
+			"id":                    id,
+			"title":                 jsonutil.StringFromAny(release["name"]),
+			"artist":                map[string]any{"name": c.releaseArtistName(release["artists"])},
+			"tracks_count":          jsonutil.IntFromAny(release["track_count"]),
+			"release_date_original": jsonutil.StringFromAny(release["new_release_date"]),
+		})
+	}
+	return map[string]any{
+		"id":     jsonutil.StringFromAny(raw["id"]),
+		"name":   jsonutil.StringFromAny(raw["name"]),
+		"title":  jsonutil.StringFromAny(raw["name"]),
+		"albums": map[string]any{"items": items},
+	}
+}
+
+func playlistMetadata(raw map[string]any, tracks []any) map[string]any {
+	name := jsonutil.StringFromAny(raw["name"])
+	return map[string]any{
+		"id":           jsonutil.StringFromAny(raw["id"]),
+		"name":         name,
+		"title":        name,
+		"tracks_count": firstPositiveInt(jsonutil.IntFromAny(raw["track_count"]), len(tracks)),
+		"image":        imageMap(raw["image"]),
+		"tracks":       map[string]any{"items": tracks},
+	}
+}
+
+func (c *Client) normalizeSearchItems(mediaType string, items []any) []any {
+	out := make([]any, 0, len(items))
+	for _, raw := range items {
+		m, ok := raw.(map[string]any)
+		if !ok {
+			continue
+		}
+		switch mediaType {
+		case "track":
+			out = append(out, c.normalizeTrackListItem(m))
+		case "album":
+			out = append(out, map[string]any{"id": jsonutil.StringFromAny(m["id"]), "title": jsonutil.StringFromAny(m["name"]), "artist": map[string]any{"name": c.releaseArtistName(m["artists"])}, "tracks_count": jsonutil.IntFromAny(m["track_count"]), "release_date_original": jsonutil.StringFromAny(m["new_release_date"])})
+		case "label":
+			out = append(out, map[string]any{"id": jsonutil.StringFromAny(m["id"]), "title": jsonutil.StringFromAny(m["name"]), "name": jsonutil.StringFromAny(m["name"])})
+		}
+	}
+	return out
+}
+
+func beatportQuality(q int) string {
+	switch q {
+	case 1:
+		return "medium"
+	case 2:
+		return "high"
+	default:
+		return "lossless"
+	}
+}
+
+func audioProfile(quality, streamQuality string) (provider.AudioProfile, string) {
+	s := strings.ToLower(strings.TrimSpace(streamQuality))
+	switch {
+	case strings.Contains(s, "flac") || quality == "lossless":
+		return provider.AudioProfile{Container: "FLAC", Codec: "FLAC", Quality: "LOSSLESS", BitDepth: 16, SamplingRate: "44.1"}, "flac"
+	case strings.Contains(s, "256") || quality == "high":
+		return provider.AudioProfile{Container: "M4A", Codec: "AACLC", Quality: "HIGH", BitDepth: 16, SamplingRate: "44.1", BitrateKbps: 256}, "m4a"
+	default:
+		return provider.AudioProfile{Container: "M4A", Codec: "AACLC", Quality: "LOW", BitDepth: 16, SamplingRate: "44.1", BitrateKbps: 128}, "m4a"
+	}
+}
+
+func artistNames(v any) []string {
+	items := sliceAny(v)
+	names := make([]string, 0, len(items))
+	for _, raw := range items {
+		m, ok := raw.(map[string]any)
+		if !ok {
+			continue
+		}
+		if name := strings.TrimSpace(jsonutil.StringFromAny(m["name"])); name != "" {
+			names = append(names, name)
+		}
+	}
+	return names
+}
+
+func displayArtistNames(names []string) string {
+	switch len(names) {
+	case 0:
+		return ""
+	case 1:
+		return names[0]
+	case 2:
+		return names[0] + " & " + names[1]
+	default:
+		return strings.Join(names[:len(names)-1], ", ") + " & " + names[len(names)-1]
+	}
+}
+
+func (c *Client) releaseArtistName(v any) string {
+	items := sliceAny(v)
+	threshold := c.cfg.Session.Beatport.VariousArtistsThreshold
+	if threshold >= 0 && len(items) > threshold {
+		return "Various Artists"
+	}
+	return displayArtistNames(artistNames(v))
+}
+
+func (c *Client) releaseArtistNameForTracks(releaseArtists any, tracks []any) string {
+	common := commonReleaseArtists(releaseArtists, tracks)
+	if len(common) > 0 {
+		return displayArtistNames(artistNames(common))
+	}
+	return c.releaseArtistName(releaseArtists)
+}
+
+func commonReleaseArtists(releaseArtists any, tracks []any) []any {
+	items := sliceAny(releaseArtists)
+	if len(items) == 0 || len(tracks) == 0 {
+		return nil
+	}
+	counts := map[string]int{}
+	trackCount := 0
+	for _, rawTrack := range tracks {
+		track, ok := rawTrack.(map[string]any)
+		if !ok {
+			continue
+		}
+		trackCount++
+		seen := map[string]bool{}
+		for _, rawArtist := range sliceAny(track["artists"]) {
+			if key := artistIdentity(rawArtist); key != "" {
+				seen[key] = true
+			}
+		}
+		for key := range seen {
+			counts[key]++
+		}
+	}
+	if trackCount == 0 {
+		return nil
+	}
+	common := make([]any, 0)
+	for _, rawArtist := range items {
+		if key := artistIdentity(rawArtist); key != "" && counts[key] == trackCount {
+			common = append(common, rawArtist)
+		}
+	}
+	return common
+}
+
+func artistIdentity(raw any) string {
+	m, ok := raw.(map[string]any)
+	if !ok {
+		return ""
+	}
+	if id := strings.TrimSpace(jsonutil.StringFromAny(m["id"])); id != "" {
+		return "id:" + id
+	}
+	if name := strings.TrimSpace(jsonutil.StringFromAny(m["name"])); name != "" {
+		return "name:" + strings.ToLower(name)
+	}
+	return ""
+}
+
+func cloneMap(in map[string]any) map[string]any {
+	out := make(map[string]any, len(in))
+	for k, v := range in {
+		out[k] = v
+	}
+	return out
+}
+
+func firstArtistID(v any) string {
+	items := sliceAny(v)
+	if len(items) == 0 {
+		return ""
+	}
+	m, _ := items[0].(map[string]any)
+	return jsonutil.StringFromAny(m["id"])
+}
+
+func imageMap(v any) map[string]any {
+	m := mapAny(v)
+	dynamic := strings.TrimSpace(jsonutil.StringFromAny(m["dynamic_uri"]))
+	uri := strings.TrimSpace(jsonutil.StringFromAny(m["uri"]))
+	if dynamic != "" {
+		return map[string]any{
+			"original":   strings.ReplaceAll(dynamic, "{w}x{h}", "1400x1400"),
+			"extralarge": strings.ReplaceAll(dynamic, "{w}x{h}", "1000x1000"),
+			"large":      strings.ReplaceAll(dynamic, "{w}x{h}", "500x500"),
+			"small":      strings.ReplaceAll(dynamic, "{w}x{h}", "250x250"),
+			"thumbnail":  strings.ReplaceAll(dynamic, "{w}x{h}", "100x100"),
+		}
+	}
+	if uri != "" {
+		return map[string]any{"original": uri, "large": uri}
+	}
+	return nil
+}
+
+func mapAny(v any) map[string]any {
+	m, _ := v.(map[string]any)
+	if m == nil {
+		return map[string]any{}
+	}
+	return m
+}
+
+func sliceAny(v any) []any {
+	s, ok := v.([]any)
+	if !ok {
+		return nil
+	}
+	return s
+}
+
+func firstPositiveInt(vals ...int) int {
+	for _, v := range vals {
+		if v > 0 {
+			return v
+		}
+	}
+	return 0
+}
+
+func cloneValues(in url.Values) url.Values {
+	out := url.Values{}
+	for k, vals := range in {
+		out[k] = append([]string(nil), vals...)
+	}
+	return out
+}

internal/provider/beatport/client_test.go

@@ -0,0 +1,267 @@
+package beatport
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"streamrip-go/internal/config"
+)
+
+func newTestClient(t *testing.T, handler http.Handler) (*Client, func()) {
+	t.Helper()
+	ts := httptest.NewServer(handler)
+	cfg := &config.Config{Session: config.DefaultConfigData(), File: config.DefaultConfigData()}
+	cfg.Session.Beatport.Username = "user"
+	cfg.Session.Beatport.Password = "pass"
+	cfg.Session.Beatport.AccessToken = "token"
+	cfg.Session.Beatport.TokenExpiry = time.Now().Add(time.Hour).Unix()
+	c := New(cfg)
+	c.baseURL = ts.URL
+	c.http = ts.Client()
+	c.loggedIn = true
+	return c, ts.Close
+}
+
+func writeJSON(t *testing.T, w http.ResponseWriter, v any) {
+	t.Helper()
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(v); err != nil {
+		t.Fatalf("encode json: %v", err)
+	}
+}
+
+func TestGetDownloadableMapsQuality(t *testing.T) {
+	c, closeServer := newTestClient(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/catalog/tracks/42/download/" {
+			t.Fatalf("path = %q", r.URL.Path)
+		}
+		if got := r.URL.Query().Get("quality"); got != "high" {
+			t.Fatalf("quality = %q, want high", got)
+		}
+		writeJSON(t, w, map[string]any{"location": "https://cdn.example/42.m4a", "stream_quality": ".256k.aac.mp4"})
+	}))
+	defer closeServer()
+
+	d, err := c.GetDownloadable(context.Background(), "42", 2)
+	if err != nil {
+		t.Fatalf("GetDownloadable() error = %v", err)
+	}
+	if d.URL != "https://cdn.example/42.m4a" || d.Extension != "m4a" || d.Audio.BitrateKbps != 256 || d.Audio.Quality != "HIGH" {
+		t.Fatalf("unexpected downloadable: %+v", d)
+	}
+}
+
+func TestAlbumMetadataNormalizesReleaseTracks(t *testing.T) {
+	c, closeServer := newTestClient(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/catalog/releases/7/":
+			writeJSON(t, w, map[string]any{
+				"id":               7,
+				"name":             "Release Name",
+				"new_release_date": "2024-01-02",
+				"track_count":      1,
+				"artists":          []any{map[string]any{"id": 10, "name": "Album Artist"}},
+				"image":            map[string]any{"dynamic_uri": "https://img.example/{w}x{h}.jpg"},
+			})
+		case "/catalog/releases/7/tracks/":
+			writeJSON(t, w, map[string]any{
+				"next": nil,
+				"results": []any{map[string]any{
+					"id":       42,
+					"name":     "Track Name",
+					"mix_name": "Original Mix",
+					"number":   1,
+					"artists":  []any{map[string]any{"id": 11, "name": "Track Artist"}},
+					"genre":    map[string]any{"name": "House"},
+					"isrc":     "USABC1234567",
+				}},
+			})
+		default:
+			t.Fatalf("unexpected path %q", r.URL.Path)
+		}
+	}))
+	defer closeServer()
+
+	meta, err := c.GetMetadata(context.Background(), "7", "album")
+	if err != nil {
+		t.Fatalf("GetMetadata() error = %v", err)
+	}
+	if meta["title"] != "Release Name" || meta["release_date_original"] != "2024-01-02" {
+		t.Fatalf("unexpected album meta: %+v", meta)
+	}
+	tracks := meta["tracks"].(map[string]any)["items"].([]any)
+	if len(tracks) != 1 {
+		t.Fatalf("tracks len = %d", len(tracks))
+	}
+	track := tracks[0].(map[string]any)
+	if track["id"] != "42" || track["title"] != "Track Name" || track["version"] != "Original Mix" {
+		t.Fatalf("unexpected track meta: %+v", track)
+	}
+	album := track["album"].(map[string]any)
+	if album["title"] != "Release Name" {
+		t.Fatalf("unexpected track album: %+v", album)
+	}
+}
+
+func TestAlbumMetadataCollapsesManyReleaseArtists(t *testing.T) {
+	c, closeServer := newTestClient(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/catalog/releases/7/":
+			writeJSON(t, w, map[string]any{
+				"id":          7,
+				"name":        "Compilation",
+				"track_count": 2,
+				"artists": []any{
+					map[string]any{"id": 1, "name": "A"},
+					map[string]any{"id": 2, "name": "B"},
+					map[string]any{"id": 3, "name": "C"},
+					map[string]any{"id": 4, "name": "D"},
+				},
+			})
+		case "/catalog/releases/7/tracks/":
+			writeJSON(t, w, map[string]any{
+				"next": nil,
+				"results": []any{
+					map[string]any{"id": 42, "name": "Track A", "number": 1, "artists": []any{map[string]any{"id": 1, "name": "A"}}},
+					map[string]any{"id": 43, "name": "Track B", "number": 2, "artists": []any{map[string]any{"id": 2, "name": "B"}}},
+				},
+			})
+		default:
+			t.Fatalf("unexpected path %q", r.URL.Path)
+		}
+	}))
+	defer closeServer()
+
+	meta, err := c.GetMetadata(context.Background(), "7", "album")
+	if err != nil {
+		t.Fatalf("GetMetadata() error = %v", err)
+	}
+	artist := meta["artist"].(map[string]any)
+	if artist["name"] != "Various Artists" {
+		t.Fatalf("album artist = %q, want Various Artists", artist["name"])
+	}
+	track := meta["tracks"].(map[string]any)["items"].([]any)[0].(map[string]any)
+	album := track["album"].(map[string]any)
+	albumArtist := album["artist"].(map[string]any)
+	if albumArtist["name"] != "Various Artists" {
+		t.Fatalf("track album artist = %q, want Various Artists", albumArtist["name"])
+	}
+}
+
+func TestAlbumMetadataUsesArtistPresentOnEveryTrack(t *testing.T) {
+	c, closeServer := newTestClient(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/catalog/releases/7/":
+			writeJSON(t, w, map[string]any{
+				"id":          7,
+				"name":        "Artist Album",
+				"track_count": 3,
+				"artists": []any{
+					map[string]any{"id": 1, "name": "Main"},
+					map[string]any{"id": 2, "name": "Guest A"},
+					map[string]any{"id": 3, "name": "Guest B"},
+					map[string]any{"id": 4, "name": "Guest C"},
+				},
+			})
+		case "/catalog/releases/7/tracks/":
+			writeJSON(t, w, map[string]any{
+				"next": nil,
+				"results": []any{
+					map[string]any{"id": 42, "name": "Track A", "number": 1, "artists": []any{map[string]any{"id": 1, "name": "Main"}, map[string]any{"id": 2, "name": "Guest A"}}},
+					map[string]any{"id": 43, "name": "Track B", "number": 2, "artists": []any{map[string]any{"id": 1, "name": "Main"}, map[string]any{"id": 3, "name": "Guest B"}}},
+					map[string]any{"id": 44, "name": "Track C", "number": 3, "artists": []any{map[string]any{"id": 1, "name": "Main"}, map[string]any{"id": 4, "name": "Guest C"}}},
+				},
+			})
+		default:
+			t.Fatalf("unexpected path %q", r.URL.Path)
+		}
+	}))
+	defer closeServer()
+
+	meta, err := c.GetMetadata(context.Background(), "7", "album")
+	if err != nil {
+		t.Fatalf("GetMetadata() error = %v", err)
+	}
+	artist := meta["artist"].(map[string]any)
+	if artist["name"] != "Main" {
+		t.Fatalf("album artist = %q, want Main", artist["name"])
+	}
+	track := meta["tracks"].(map[string]any)["items"].([]any)[0].(map[string]any)
+	album := track["album"].(map[string]any)
+	albumArtist := album["artist"].(map[string]any)
+	if albumArtist["name"] != "Main" {
+		t.Fatalf("track album artist = %q, want Main", albumArtist["name"])
+	}
+}
+
+func TestReleaseArtistCollapseCanBeDisabled(t *testing.T) {
+	cfg := &config.Config{Session: config.DefaultConfigData(), File: config.DefaultConfigData()}
+	cfg.Session.Beatport.VariousArtistsThreshold = -1
+	c := New(cfg)
+	got := c.releaseArtistName([]any{
+		map[string]any{"name": "A"},
+		map[string]any{"name": "B"},
+		map[string]any{"name": "C"},
+		map[string]any{"name": "D"},
+	})
+	if got != "A, B, C & D" {
+		t.Fatalf("releaseArtistName() = %q", got)
+	}
+}
+
+func TestDisplayArtistNamesUsesCreditPunctuation(t *testing.T) {
+	got := displayArtistNames(artistNames([]any{
+		map[string]any{"name": "A"},
+		map[string]any{"name": "B"},
+		map[string]any{"name": "C"},
+	}))
+	if got != "A, B & C" {
+		t.Fatalf("displayArtistNames() = %q", got)
+	}
+}
+
+func TestArtistMetadataUsesReleases(t *testing.T) {
+	c, closeServer := newTestClient(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/catalog/artists/908468/":
+			writeJSON(t, w, map[string]any{"id": 908468, "name": "D'ort"})
+		case "/catalog/releases/":
+			if got := r.URL.Query().Get("artist_id"); got != "908468" {
+				t.Fatalf("artist_id = %q", got)
+			}
+			writeJSON(t, w, map[string]any{
+				"next": nil,
+				"results": []any{map[string]any{
+					"id":               123,
+					"name":             "An Artisan's Exhibition",
+					"new_release_date": "2026-01-01",
+					"track_count":      10,
+					"artists":          []any{map[string]any{"id": 908468, "name": "D'ort"}},
+				}},
+			})
+		default:
+			t.Fatalf("unexpected path %q", r.URL.Path)
+		}
+	}))
+	defer closeServer()
+
+	meta, err := c.GetMetadata(context.Background(), "908468", "artist")
+	if err != nil {
+		t.Fatalf("GetMetadata() error = %v", err)
+	}
+	if meta["name"] != "D'ort" {
+		t.Fatalf("artist name = %q", meta["name"])
+	}
+	albums := meta["albums"].(map[string]any)["items"].([]any)
+	if len(albums) != 1 {
+		t.Fatalf("albums len = %d", len(albums))
+	}
+	album := albums[0].(map[string]any)
+	if album["id"] != "123" || album["title"] != "An Artisan's Exhibition" || album["tracks_count"] != 10 {
+		t.Fatalf("unexpected album: %+v", album)
+	}
+}

internal/provider/provider.go

@@ -7,6 +7,7 @@ type Downloadable struct {
 	Extension string
 	Source    string
 	Cipher    string
+	Key       string
 	TrackID   string
 	Audio     AudioProfile
 }

internal/provider/yandex/client_test.go

@@ -0,0 +1,191 @@
+package yandex
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+
+	"streamrip-go/internal/config"
+	"streamrip-go/internal/jsonutil"
+)
+
+func TestYandexDownloadSignMatchesCapturedFormat(t *testing.T) {
+	sign, ts := yandexDownloadSign("32038184", "lossless", []string{"flac", "aac", "he-aac", "mp3", "flac-mp4", "aac-mp4", "he-aac-mp4"}, "raw")
+	if ts <= 0 {
+		t.Fatalf("timestamp = %d", ts)
+	}
+	if strings.TrimSpace(sign) == "" {
+		t.Fatalf("decoded sign is empty")
+	}
+	if strings.Contains(sign, "=") {
+		t.Fatalf("sign unexpectedly contains base64 padding: %q", sign)
+	}
+	if strings.Contains(sign, " ") {
+		t.Fatalf("sign unexpectedly contains space: %q", sign)
+	}
+}
+
+func TestGetDownloadableUsesModernGetFileInfo(t *testing.T) {
+	var gotPath string
+	var gotQuery url.Values
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		gotPath = r.URL.Path
+		gotQuery = r.URL.Query()
+		if r.URL.Path == "/account/about" {
+			_ = json.NewEncoder(w).Encode(map[string]any{"result": map[string]any{"uid": "123"}})
+			return
+		}
+		if r.URL.Path != "/get-file-info" {
+			w.WriteHeader(http.StatusNotFound)
+			return
+		}
+		_ = json.NewEncoder(w).Encode(map[string]any{
+			"result": map[string]any{
+				"downloadInfo": map[string]any{
+					"trackId":   "32038184",
+					"quality":   "lossless",
+					"codec":     "flac-mp4",
+					"transport": "encraw",
+					"key":       "00112233445566778899aabbccddeeff",
+					"bitrate":   0,
+					"url":       "https://strm.example/music-v2/crypt/x/flac-mp4",
+				},
+			},
+		})
+	}))
+	defer ts.Close()
+
+	d := config.DefaultConfigData()
+	d.Downloads.RequestsPerMinute = 0
+	d.Yandex.AccessToken = "token"
+	c := New(&config.Config{File: d, Session: d})
+	c.baseURL = ts.URL
+	c.loggedIn = true
+
+	dl, err := c.GetDownloadable(context.Background(), "32038184:1683700", 2)
+	if err != nil {
+		t.Fatalf("GetDownloadable() error = %v", err)
+	}
+	if gotPath != "/get-file-info" {
+		t.Fatalf("path = %q, want /get-file-info", gotPath)
+	}
+	if gotQuery.Get("trackId") != "32038184" {
+		t.Fatalf("trackId = %q, want 32038184", gotQuery.Get("trackId"))
+	}
+	if gotQuery.Get("quality") != "lossless" {
+		t.Fatalf("quality = %q, want lossless", gotQuery.Get("quality"))
+	}
+	if gotQuery.Get("transports") != "encraw" {
+		t.Fatalf("transports = %q, want encraw", gotQuery.Get("transports"))
+	}
+	if dl.Extension != "m4a" {
+		t.Fatalf("extension = %q, want m4a", dl.Extension)
+	}
+	if dl.Audio.Codec != "FLAC" || dl.Audio.Quality != "LOSSLESS" {
+		t.Fatalf("unexpected audio profile: %+v", dl.Audio)
+	}
+	if dl.TrackID != "32038184" {
+		t.Fatalf("track id = %q, want 32038184", dl.TrackID)
+	}
+	if dl.Cipher != "AES_CTR" || dl.Key == "" {
+		t.Fatalf("expected yandex cipher metadata, got cipher=%q key=%q", dl.Cipher, dl.Key)
+	}
+}
+
+func TestGetMetadataTrackUsesModernTracksEndpoint(t *testing.T) {
+	var gotMethod string
+	var gotPath string
+	var gotBody string
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		gotMethod = r.Method
+		gotPath = r.URL.Path
+		if r.URL.Path != "/tracks" {
+			w.WriteHeader(http.StatusNotFound)
+			return
+		}
+		body, _ := io.ReadAll(r.Body)
+		gotBody = string(body)
+		_ = json.NewEncoder(w).Encode(map[string]any{
+			"result": []map[string]any{{
+				"id":      "9442712",
+				"realId":  "9442712",
+				"title":   "Nightcall",
+				"artists": []map[string]any{{"id": "1433871", "name": "Kavinsky"}, {"id": "42", "name": "Lovefoxxx"}},
+				"albums": []map[string]any{{
+					"id":          "1000856",
+					"title":       "OutRun",
+					"releaseDate": "2013-02-25T00:00:00+04:00",
+					"trackCount":  13,
+					"artists":     []map[string]any{{"id": "1433871", "name": "Kavinsky"}, {"id": "42", "name": "Lovefoxxx"}},
+					"trackPosition": map[string]any{
+						"index":  0,
+						"volume": 1,
+					},
+				}},
+			}},
+		})
+	}))
+	defer ts.Close()
+
+	d := config.DefaultConfigData()
+	d.Downloads.RequestsPerMinute = 0
+	d.Yandex.AccessToken = "token"
+	c := New(&config.Config{File: d, Session: d})
+	c.baseURL = ts.URL
+	c.loggedIn = true
+
+	meta, err := c.GetMetadata(context.Background(), "9442712:1000856", "track")
+	if err != nil {
+		t.Fatalf("GetMetadata() error = %v", err)
+	}
+	if gotMethod != http.MethodPost || gotPath != "/tracks" {
+		t.Fatalf("unexpected request: %s %s", gotMethod, gotPath)
+	}
+	if !strings.Contains(gotBody, "trackIds=9442712%3A1000856") {
+		t.Fatalf("body = %q", gotBody)
+	}
+	if meta["id"] != "9442712:1000856" {
+		t.Fatalf("id = %v", meta["id"])
+	}
+	if album, _ := meta["album"].(map[string]any); jsonutil.StringFromAny(album["title"]) != "OutRun" {
+		t.Fatalf("unexpected album: %+v", album)
+	}
+	if artist := jsonutil.NestedString(meta, "artist", "name"); artist != "Kavinsky & Lovefoxxx" {
+		t.Fatalf("artist = %q", artist)
+	}
+	if albumArtist := jsonutil.NestedString(meta, "album", "artist", "name"); albumArtist != "Kavinsky & Lovefoxxx" {
+		t.Fatalf("album artist = %q", albumArtist)
+	}
+	artists, _ := meta["artist_names"].([]string)
+	if strings.Join(artists, ";") != "Kavinsky;Lovefoxxx" {
+		t.Fatalf("artist_names = %#v", artists)
+	}
+}
+
+func TestDisplayArtistNamesUsesCreditPunctuation(t *testing.T) {
+	got := displayArtistNames([]string{"A", "B", "C"})
+	if got != "A, B & C" {
+		t.Fatalf("displayArtistNames() = %q", got)
+	}
+}
+
+func TestLegacyDirectURLBuildsPlayableMP3URL(t *testing.T) {
+	url, err := legacyDirectURL(&legacyDownloadInfoXML{
+		Host: "example.test",
+		Path: "/abc123",
+		TS:   "1234567890",
+		S:    "tailxyz",
+	})
+	if err != nil {
+		t.Fatalf("legacyDirectURL() error = %v", err)
+	}
+	want := "https://example.test/get-mp3/248c1c6ff5daf481560d3bd9f24e8058/1234567890/abc123"
+	if url != want {
+		t.Fatalf("legacyDirectURL() = %q, want %q", url, want)
+	}
+}

internal/urlparse/parse.go

@@ -45,6 +45,10 @@ func Parse(raw string) *ParsedURL {
 	switch {
 	case isQobuzHost(host):
 		return parseQobuz(raw, parts)
+	case isYandexHost(host):
+		return parseYandex(raw, parts)
+	case isBeatportHost(host):
+		return parseBeatport(raw, parts)
 	case isTidalHost(host):
 		return parseTidal(raw, parts)
 	case isDeezerHost(host):
@@ -56,6 +60,60 @@ func Parse(raw string) *ParsedURL {
 	}
 }
 
+func parseBeatport(raw string, parts []string) *ParsedURL {
+	if len(parts) < 2 {
+		return nil
+	}
+	if len(parts[0]) == 2 {
+		parts = parts[1:]
+	}
+	if len(parts) > 0 && parts[0] == "catalog" {
+		parts = parts[1:]
+	}
+	if len(parts) < 2 {
+		return nil
+	}
+
+	mediaType := ""
+	idIndex := 1
+	switch parts[0] {
+	case "track", "tracks":
+		mediaType = "track"
+		if parts[0] == "track" {
+			idIndex = 2
+		}
+	case "release", "releases":
+		mediaType = "album"
+		if parts[0] == "release" {
+			idIndex = 2
+		}
+	case "library":
+		if len(parts) < 3 || (parts[1] != "playlists" && parts[1] != "playlist") {
+			return nil
+		}
+		mediaType = "playlist"
+		idIndex = 2
+	case "playlists":
+		mediaType = "playlist"
+		idIndex = 2
+	case "chart", "playlist":
+		mediaType = "chart"
+		idIndex = 2
+	case "artist":
+		mediaType = "artist"
+		idIndex = 2
+	case "label":
+		mediaType = "label"
+		idIndex = 2
+	default:
+		return nil
+	}
+	if idIndex >= len(parts) || strings.TrimSpace(parts[idIndex]) == "" {
+		return nil
+	}
+	return &ParsedURL{OriginalURL: raw, Source: "beatport", MediaType: mediaType, ID: parts[idIndex], Kind: KindGeneric}
+}
+
 func parseQobuz(raw string, parts []string) *ParsedURL {
 	if len(parts) < 2 {
 		return nil
@@ -69,6 +127,9 @@ func parseQobuz(raw string, parts []string) *ParsedURL {
 	}
 
 	mediaType := parts[0]
+	if mediaType == "interpreter" {
+		mediaType = "artist"
+	}
 	if !isSupportedMedia(mediaType) {
 		return nil
 	}
@@ -80,6 +141,42 @@ func parseQobuz(raw string, parts []string) *ParsedURL {
 	return &ParsedURL{OriginalURL: raw, Source: "qobuz", MediaType: mediaType, ID: id, Kind: KindGeneric}
 }
 
+func parseYandex(raw string, parts []string) *ParsedURL {
+	if len(parts) < 2 {
+		return nil
+	}
+
+	switch parts[0] {
+	case "track":
+		if len(parts) != 2 || strings.TrimSpace(parts[1]) == "" {
+			return nil
+		}
+		return &ParsedURL{OriginalURL: raw, Source: "yandex", MediaType: "track", ID: parts[1], Kind: KindGeneric}
+	case "album":
+		if len(parts) == 2 && strings.TrimSpace(parts[1]) != "" {
+			return &ParsedURL{OriginalURL: raw, Source: "yandex", MediaType: "album", ID: parts[1], Kind: KindGeneric}
+		}
+		if len(parts) == 4 && parts[2] == "track" && strings.TrimSpace(parts[1]) != "" && strings.TrimSpace(parts[3]) != "" {
+			return &ParsedURL{OriginalURL: raw, Source: "yandex", MediaType: "track", ID: parts[3] + ":" + parts[1], Kind: KindGeneric}
+		}
+	case "artist":
+		if len(parts) != 2 || strings.TrimSpace(parts[1]) == "" {
+			return nil
+		}
+		return &ParsedURL{OriginalURL: raw, Source: "yandex", MediaType: "artist", ID: parts[1], Kind: KindGeneric}
+	case "users":
+		if len(parts) == 4 && parts[2] == "playlists" && strings.TrimSpace(parts[1]) != "" && strings.TrimSpace(parts[3]) != "" {
+			return &ParsedURL{OriginalURL: raw, Source: "yandex", MediaType: "playlist", ID: parts[1] + ":" + parts[3], Kind: KindGeneric}
+		}
+	case "playlists":
+		if len(parts) == 2 && strings.TrimSpace(parts[1]) != "" {
+			return &ParsedURL{OriginalURL: raw, Source: "yandex", MediaType: "playlist", ID: parts[1], Kind: KindGeneric}
+		}
+	}
+
+	return nil
+}
+
 func parseTidal(raw string, parts []string) *ParsedURL {
 	if len(parts) < 2 {
 		return nil
@@ -177,6 +274,14 @@ func isQobuzHost(host string) bool {
 	return host == "qobuz.com" || host == "open.qobuz.com" || host == "play.qobuz.com"
 }
 
+func isYandexHost(host string) bool {
+	return host == "music.yandex.ru" || host == "music.yandex.com" || host == "music.yandex.kz" || host == "music.yandex.by"
+}
+
+func isBeatportHost(host string) bool {
+	return host == "beatport.com" || host == "api.beatport.com"
+}
+
 func isTidalHost(host string) bool {
 	return host == "tidal.com" || host == "open.tidal.com" || host == "listen.tidal.com"
 }
@@ -191,7 +296,7 @@ func isSoundcloudHost(host string) bool {
 
 func isSupportedMedia(mediaType string) bool {
 	switch mediaType {
-	case "album", "track", "playlist", "artist", "label", "video":
+	case "album", "track", "playlist", "artist", "label", "video", "chart":
 		return true
 	default:
 		return false

internal/urlparse/parse_test.go

@@ -27,6 +27,71 @@ func TestQobuzAlbumURL(t *testing.T) {
 	}
 }
 
+func TestQobuzInterpreterURLParsesAsArtist(t *testing.T) {
+	inputs := []string{
+		"https://www.qobuz.com/us-en/interpreter/odezenne/739874",
+		"https://play.qobuz.com/artist/739874",
+	}
+	for _, input := range inputs {
+		result := Parse(input)
+		if result == nil {
+			t.Fatalf("expected parsed url for %q", input)
+		}
+		if result.Source != "qobuz" || result.MediaType != "artist" || result.ID != "739874" {
+			t.Fatalf("unexpected parse result for %q: %+v", input, result)
+		}
+	}
+}
+
+func TestYandexURLs(t *testing.T) {
+	tests := []struct {
+		url       string
+		mediaType string
+		id        string
+	}{
+		{url: "https://music.yandex.ru/track/9442712", mediaType: "track", id: "9442712"},
+		{url: "https://music.yandex.ru/album/1000856", mediaType: "album", id: "1000856"},
+		{url: "https://music.yandex.ru/album/1000856/track/9442712", mediaType: "track", id: "9442712:1000856"},
+		{url: "https://music.yandex.ru/artist/1433871", mediaType: "artist", id: "1433871"},
+		{url: "https://music.yandex.ru/users/yandexmusic/playlists/1635", mediaType: "playlist", id: "yandexmusic:1635"},
+		{url: "https://music.yandex.ru/playlists/4ae45ac1-0972-734f-8537-769490399170", mediaType: "playlist", id: "4ae45ac1-0972-734f-8537-769490399170"},
+	}
+	for _, tc := range tests {
+		result := Parse(tc.url)
+		if result == nil {
+			t.Fatalf("expected parse for %q", tc.url)
+		}
+		if result.Source != "yandex" || result.MediaType != tc.mediaType || result.ID != tc.id {
+			t.Fatalf("unexpected parse result for %q: %+v", tc.url, result)
+		}
+	}
+}
+
+func TestBeatportURLs(t *testing.T) {
+	tests := []struct {
+		url       string
+		mediaType string
+		id        string
+	}{
+		{url: "https://www.beatport.com/track/strobe/1696999", mediaType: "track", id: "1696999"},
+		{url: "https://www.beatport.com/release/random-album/12345", mediaType: "album", id: "12345"},
+		{url: "https://www.beatport.com/library/playlists/67890", mediaType: "playlist", id: "67890"},
+		{url: "https://www.beatport.com/chart/some-chart/111", mediaType: "chart", id: "111"},
+		{url: "https://www.beatport.com/artist/deadmau5/24078", mediaType: "artist", id: "24078"},
+		{url: "https://www.beatport.com/label/mau5trap/1234", mediaType: "label", id: "1234"},
+		{url: "https://api.beatport.com/v4/catalog/tracks/1696999/", mediaType: "track", id: "1696999"},
+	}
+	for _, tc := range tests {
+		result := Parse(tc.url)
+		if result == nil {
+			t.Fatalf("expected parse for %q", tc.url)
+		}
+		if result.Source != "beatport" || result.MediaType != tc.mediaType || result.ID != tc.id {
+			t.Fatalf("unexpected parse result for %q: %+v", tc.url, result)
+		}
+	}
+}
+
 func TestTidalTrackURL(t *testing.T) {
 	inputs := []string{
 		"https://tidal.com/browse/track/3083287",