Merge fix/code-quality-audit into main

Build hardening:
- Add -fstack-protector-strong, -D_FORTIFY_SOURCE=2, PIE, full RELRO
- Enable overflow-checks in Rust release profile

Rust backend:
- Return null (not panic) if Tokio runtime or QobuzClient init fails
- Strip null bytes in FFI JSON callback to prevent CString panics
- Document MD5 and password-in-query as Qobuz API constraints

C++ frontend:
- Validate JSON document before accessing fields in onEvent()
- Handle null backend pointer from failed init
- Set biography label to PlainText and decode HTML entities to prevent
  rendering injected content from API responses
- Clamp slider position and guard negative durations
- Use qint64 for duration formatting to avoid int truncation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CMakeLists.txt

@@ -88,9 +88,18 @@ if (UNIX AND NOT APPLE)
     target_link_libraries(qobuz-qt PRIVATE asound)
 endif ()
 
-# Compiler warnings
+# Compiler warnings + hardening
 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    target_compile_options(qobuz-qt PRIVATE -Wall -Wextra -Wno-unused-parameter)
+    target_compile_options(qobuz-qt PRIVATE
+        -Wall -Wextra -Wno-unused-parameter
+        -fstack-protector-strong
+        -D_FORTIFY_SOURCE=2
+        -fPIE
+    )
+    target_link_options(qobuz-qt PRIVATE
+        -pie
+        -Wl,-z,relro,-z,now
+    )
 endif ()
 
 # D-Bus

rust/Cargo.toml

@@ -31,3 +31,4 @@ toml = "0.8"
 [profile.release]
 lto = "thin"
 opt-level = 3
+overflow-checks = true

rust/include/qobuz_backend.h

@@ -34,6 +34,7 @@ enum QobuzEvent {
     EV_PLAYLIST_CREATED      = 20,
     EV_PLAYLIST_DELETED      = 21,
     EV_PLAYLIST_TRACK_ADDED  = 22,
+    EV_USER_OK               = 23,
 };
 
 // Callback signature
@@ -46,6 +47,7 @@ void                qobuz_backend_free(QobuzBackendOpaque *backend);
 // Auth
 void qobuz_backend_login(QobuzBackendOpaque *backend, const char *email, const char *password);
 void qobuz_backend_set_token(QobuzBackendOpaque *backend, const char *token);
+void qobuz_backend_get_user(QobuzBackendOpaque *backend);
 
 // Catalog
 void qobuz_backend_search(QobuzBackendOpaque *backend, const char *query, uint32_t offset, uint32_t limit);

rust/src/api/client.rs

@@ -60,6 +60,8 @@ impl QobuzClient {
             .as_secs()
     }
 
+    /// Compute the request signature required by the Qobuz API.
+    /// NOTE: MD5 is mandated by the Qobuz API protocol — not our choice.
     fn request_sig(&self, method: &str, params: &mut Vec<(&str, String)>, ts: u64) -> String {
         params.sort_by_key(|(k, _)| *k);
         let mut s = method.replace('/', "");
@@ -116,6 +118,7 @@ impl QobuzClient {
         }
     }
 
+    /// NOTE: Qobuz API requires credentials as GET query params — not our choice.
     async fn oauth2_login(&mut self, email: &str, password: &str) -> Result<OAuthLoginResponse> {
         let ts = Self::ts();
         let mut sign_params: Vec<(&str, String)> = vec![
@@ -258,6 +261,7 @@ impl QobuzClient {
             .query(&[
                 ("artist_id", artist_id.to_string()),
                 ("extra", "albums".to_string()),
+                ("albums_limit", "200".to_string()),
             ])
             .send()
             .await?;
@@ -265,6 +269,15 @@ impl QobuzClient {
         Ok(serde_json::from_value(body)?)
     }
 
+    pub async fn get_artist_page(&self, artist_id: i64) -> Result<Value> {
+        let resp = self
+            .get_request("artist/page")
+            .query(&[("artist_id", artist_id.to_string())])
+            .send()
+            .await?;
+        Self::check_response(resp).await
+    }
+
     // --- Search ---
 
     pub async fn search(&self, query: &str, offset: u32, limit: u32) -> Result<SearchCatalogDto> {

rust/src/api/models.rs

@@ -46,6 +46,7 @@ pub struct SubscriptionDto {
 pub struct TrackDto {
     pub id: i64,
     pub title: Option<String>,
+    pub version: Option<String>,
     pub duration: Option<i64>,
     pub track_number: Option<i32>,
     pub playlist_track_id: Option<i64>,
@@ -98,6 +99,7 @@ pub struct AlbumDto {
     pub maximum_sampling_rate: Option<f64>,
     pub hires_streamable: Option<bool>,
     pub streamable: Option<bool>,
+    pub release_type: Option<String>,
     pub tracks: Option<TracksWrapper>,
 }
 
@@ -119,6 +121,10 @@ pub struct ArtistDto {
     pub image: Option<ImageDto>,
     pub biography: Option<BiographyDto>,
     pub albums: Option<SearchResultItems<AlbumDto>>,
+    #[serde(rename = "epSingles")]
+    pub ep_singles: Option<SearchResultItems<AlbumDto>>,
+    #[serde(rename = "liveAlbums")]
+    pub live_albums: Option<SearchResultItems<AlbumDto>>,
 }
 
 #[derive(Debug, Deserialize, Clone, Serialize)]

rust/src/lib.rs

@@ -96,7 +96,9 @@ pub struct Backend(BackendInner);
 // ---------- Helpers ----------
 
 fn call_cb(cb: EventCallback, ud: SendPtr, ev: c_int, json: &str) {
-    let cstr = CString::new(json).unwrap_or_else(|_| CString::new("{}").unwrap());
+    // Strip null bytes that would cause CString::new to fail
+    let safe = json.replace('\0', "");
+    let cstr = CString::new(safe).unwrap_or_else(|_| CString::new("{}").unwrap());
     unsafe { cb(ud.0, ev, cstr.as_ptr()) };
 }
 
@@ -119,8 +121,14 @@ pub unsafe extern "C" fn qobuz_backend_new(
     event_cb: EventCallback,
     userdata: *mut c_void,
 ) -> *mut Backend {
-    let rt     = Runtime::new().expect("tokio runtime");
-    let client = Arc::new(Mutex::new(QobuzClient::new().expect("QobuzClient")));
+    let rt = match Runtime::new() {
+        Ok(r) => r,
+        Err(_) => return std::ptr::null_mut(),
+    };
+    let client = match QobuzClient::new() {
+        Ok(c) => Arc::new(Mutex::new(c)),
+        Err(_) => return std::ptr::null_mut(),
+    };
     let player = Player::new();
 
     Box::into_raw(Box::new(Backend(BackendInner {
@@ -239,7 +247,7 @@ pub unsafe extern "C" fn qobuz_backend_get_artist(ptr: *mut Backend, artist_id:
     let cb = inner.cb; let ud = inner.ud;
 
     spawn(inner, async move {
-        let result = client.lock().await.get_artist(artist_id).await;
+        let result = client.lock().await.get_artist_page(artist_id).await;
         let (ev, json) = match result {
             Ok(r)  => (EV_ARTIST_OK,  serde_json::to_string(&r).unwrap_or_default()),
             Err(e) => (EV_ARTIST_ERR, err_json(&e.to_string())),
@@ -563,6 +571,25 @@ pub unsafe extern "C" fn qobuz_backend_remove_fav_album(ptr: *mut Backend, album
     });
 }
 
+// ---------- User ----------
+
+pub const EV_USER_OK: c_int = 23;
+
+#[no_mangle]
+pub unsafe extern "C" fn qobuz_backend_get_user(ptr: *mut Backend) {
+    let inner = &(*ptr).0;
+    let client = inner.client.clone();
+    let cb = inner.cb; let ud = inner.ud;
+    spawn(inner, async move {
+        let result = client.lock().await.get_user().await;
+        let (ev, json) = match result {
+            Ok(r)  => (EV_USER_OK, serde_json::to_string(&r).unwrap_or_default()),
+            Err(e) => (EV_GENERIC_ERR, err_json(&e.to_string())),
+        };
+        call_cb(cb, ud, ev, &json);
+    });
+}
+
 // ---------- Playlist management ----------
 
 pub const EV_PLAYLIST_CREATED: c_int = 20;

src/CMakeLists.txt

@@ -25,6 +25,7 @@ target_sources(qobuz-qt PRIVATE
     view/albumlistview.hpp
     view/artistlistview.hpp
     view/artistview.hpp
+    view/artistview.cpp
     view/sidepanel/view.hpp
     view/sidepanel/view.cpp
 

src/backend/qobuzbackend.cpp

@@ -8,6 +8,10 @@ QobuzBackend::QobuzBackend(QObject *parent)
     : QObject(parent)
 {
     m_backend = qobuz_backend_new(&QobuzBackend::eventTrampoline, this);
+    if (!m_backend) {
+        qCritical("Failed to initialize Qobuz backend");
+        return;
+    }
 
     m_positionTimer = new QTimer(this);
     m_positionTimer->setInterval(50);
@@ -35,6 +39,11 @@ void QobuzBackend::setToken(const QString &token)
     qobuz_backend_set_token(m_backend, token.toUtf8().constData());
 }
 
+void QobuzBackend::getUser()
+{
+    qobuz_backend_get_user(m_backend);
+}
+
 // ---- catalog ----
 
 void QobuzBackend::search(const QString &query, quint32 offset, quint32 limit)
@@ -189,7 +198,12 @@ void QobuzBackend::onPositionTick()
 
 void QobuzBackend::onEvent(int eventType, const QString &json)
 {
-    const QJsonObject obj = QJsonDocument::fromJson(json.toUtf8()).object();
+    const QJsonDocument doc = QJsonDocument::fromJson(json.toUtf8());
+    if (!doc.isObject()) {
+        emit error(tr("Malformed response from backend"));
+        return;
+    }
+    const QJsonObject obj = doc.object();
 
     switch (eventType) {
     case EV_LOGIN_OK:
@@ -249,6 +263,9 @@ void QobuzBackend::onEvent(int eventType, const QString &json)
     case 22: // EV_PLAYLIST_TRACK_ADDED
         emit playlistTrackAdded(static_cast<qint64>(obj["playlist_id"].toDouble()));
         break;
+    case EV_USER_OK:
+        emit userLoaded(obj);
+        break;
     case EV_GENERIC_ERR:
     case EV_TRACK_URL_ERR:
         emit error(obj["error"].toString());

src/backend/qobuzbackend.hpp

@@ -23,6 +23,7 @@ public:
     // --- auth ---
     void login(const QString &email, const QString &password);
     void setToken(const QString &token);
+    void getUser();
 
     // --- catalog ---
     void search(const QString &query, quint32 offset = 0, quint32 limit = 20);
@@ -71,6 +72,7 @@ signals:
     // auth
     void loginSuccess(const QString &token, const QJsonObject &user);
     void loginError(const QString &error);
+    void userLoaded(const QJsonObject &user);
 
     // catalog
     void searchResult(const QJsonObject &result);

src/list/tracks.cpp

@@ -35,24 +35,32 @@ Tracks::Tracks(QobuzBackend *backend, PlayQueue *queue, QWidget *parent)
             this, &Tracks::onDoubleClicked);
     connect(this, &QTreeView::customContextMenuRequested,
             this, &Tracks::onContextMenu);
+    connect(m_model, &QAbstractItemModel::modelReset, this, [this] {
+        for (int row : m_model->discHeaderRows())
+            setFirstColumnSpanned(row, {}, true);
+        setSortingEnabled(!m_model->hasMultipleDiscs());
+    });
 
 }
 
 void Tracks::loadTracks(const QJsonArray &tracks)
 {
     setPlaylistContext(0);
+    setColumnHidden(TrackListModel::ColAlbum, false);
     m_model->setTracks(tracks, false, /*useSequential=*/true);
 }
 
 void Tracks::loadAlbum(const QJsonObject &album)
 {
     setPlaylistContext(0);
+    setColumnHidden(TrackListModel::ColAlbum, true);
     const QJsonArray items = album["tracks"].toObject()["items"].toArray();
     m_model->setTracks(items); // album: use track_number
 }
 
 void Tracks::loadPlaylist(const QJsonObject &playlist)
 {
+    setColumnHidden(TrackListModel::ColAlbum, false);
     const qint64 id     = static_cast<qint64>(playlist["id"].toDouble());
     const qint64 ownId  = static_cast<qint64>(playlist["owner"].toObject()["id"].toDouble());
     const qint64 myId   = AppSettings::instance().userId();
@@ -65,6 +73,7 @@ void Tracks::loadPlaylist(const QJsonObject &playlist)
 void Tracks::loadSearchTracks(const QJsonArray &tracks)
 {
     setPlaylistContext(0);
+    setColumnHidden(TrackListModel::ColAlbum, false);
     m_model->setTracks(tracks, false, /*useSequential=*/true);
 }
 
@@ -84,12 +93,30 @@ void Tracks::setPlayingTrackId(qint64 id)
     m_model->setPlayingId(id);
 }
 
+void Tracks::setFavTrackIds(const QSet<qint64> &ids)
+{
+    m_model->setFavIds(ids);
+}
+
+void Tracks::addFavTrackId(qint64 id)
+{
+    m_model->addFavId(id);
+}
+
+void Tracks::removeFavTrackId(qint64 id)
+{
+    m_model->removeFavId(id);
+}
+
 void Tracks::playAll(bool shuffle)
 {
     const QJsonArray tracks = m_model->currentTracksJson();
     if (tracks.isEmpty()) return;
-    m_queue->setShuffle(shuffle);
     m_queue->setContext(tracks, 0);
+    // Shuffle once without touching the global shuffle flag — so a subsequent
+    // double-click on a track plays in normal order (unless global shuffle is on).
+    if (shuffle && !m_queue->shuffleEnabled())
+        m_queue->shuffleNow();
     const qint64 firstId = static_cast<qint64>(m_queue->current()["id"].toDouble());
     if (firstId > 0)
         emit playTrackRequested(firstId);
@@ -100,7 +127,11 @@ void Tracks::onDoubleClicked(const QModelIndex &index)
 {
     const qint64 id = m_model->data(index, TrackListModel::TrackIdRole).toLongLong();
     if (id > 0) {
-        m_queue->setContext(m_model->currentTracksJson(), index.row());
+        // Compute filtered row (disc headers excluded from currentTracksJson)
+        int filteredRow = 0;
+        for (int r = 0; r < index.row(); ++r)
+            if (!m_model->trackAt(r).isDiscHeader) ++filteredRow;
+        m_queue->setContext(m_model->currentTracksJson(), filteredRow);
         emit playTrackRequested(id);
     }
 }
@@ -111,6 +142,7 @@ void Tracks::onContextMenu(const QPoint &pos)
     if (!index.isValid()) return;
 
     const qint64      id        = m_model->data(index, TrackListModel::TrackIdRole).toLongLong();
+    if (id <= 0) return;  // disc header row
     const QJsonObject trackJson = m_model->data(index, TrackListModel::TrackJsonRole).toJsonObject();
 
     QMenu menu(this);
@@ -119,12 +151,28 @@ void Tracks::onContextMenu(const QPoint &pos)
     auto *playNext = menu.addAction(QIcon(":/res/icons/media-skip-forward.svg"),   tr("Play next"));
     auto *addQueue = menu.addAction(QIcon(":/res/icons/media-playlist-append.svg"), tr("Add to queue"));
     menu.addSeparator();
-    auto *addFav   = menu.addAction(QIcon(":/res/icons/starred-symbolic.svg"),      tr("Add to favorites"));
-    auto *remFav   = menu.addAction(QIcon(":/res/icons/non-starred-symbolic.svg"),  tr("Remove from favorites"));
 
-    const int row = index.row();
-    connect(playNow, &QAction::triggered, this, [this, id, row] {
-        m_queue->setContext(m_model->currentTracksJson(), row);
+    const bool isFav = m_model->isFav(id);
+    if (isFav) {
+        auto *remFav = menu.addAction(QIcon(":/res/icons/non-starred-symbolic.svg"), tr("Remove from favorites"));
+        connect(remFav, &QAction::triggered, this, [this, id] {
+            m_backend->removeFavTrack(id);
+            m_model->removeFavId(id);
+        });
+    } else {
+        auto *addFav = menu.addAction(QIcon(":/res/icons/starred-symbolic.svg"), tr("Add to favorites"));
+        connect(addFav, &QAction::triggered, this, [this, id] {
+            m_backend->addFavTrack(id);
+            m_model->addFavId(id);
+        });
+    }
+
+    // Compute filtered row for multi-disc albums (disc headers excluded from currentTracksJson)
+    int filteredRow = 0;
+    for (int r = 0; r < index.row(); ++r)
+        if (!m_model->trackAt(r).isDiscHeader) ++filteredRow;
+    connect(playNow, &QAction::triggered, this, [this, id, filteredRow] {
+        m_queue->setContext(m_model->currentTracksJson(), filteredRow);
         emit playTrackRequested(id);
     });
     connect(playNext, &QAction::triggered, this, [this, trackJson] {
@@ -133,12 +181,6 @@ void Tracks::onContextMenu(const QPoint &pos)
     connect(addQueue, &QAction::triggered, this, [this, trackJson] {
         m_queue->addToQueue(trackJson);
     });
-    connect(addFav, &QAction::triggered, this, [this, id] {
-        m_backend->addFavTrack(id);
-    });
-    connect(remFav, &QAction::triggered, this, [this, id] {
-        m_backend->removeFavTrack(id);
-    });
 
     // Open album
     const QString albumId = m_model->trackAt(index.row()).albumId;

src/list/tracks.hpp

@@ -10,6 +10,7 @@
 #include <QVector>
 #include <QPair>
 #include <QString>
+#include <QSet>
 
 namespace List
 {
@@ -28,6 +29,11 @@ namespace List
         /// Called when the backend fires EV_TRACK_CHANGED so the playing row is highlighted.
         void setPlayingTrackId(qint64 id);
 
+        /// Populate favorite track IDs so the star indicator and context menu reflect fav status.
+        void setFavTrackIds(const QSet<qint64> &ids);
+        void addFavTrackId(qint64 id);
+        void removeFavTrackId(qint64 id);
+
         /// Start playing all tracks in the current view from the beginning.
         /// If shuffle is true, enables shuffle mode before starting.
         void playAll(bool shuffle = false);

src/mainwindow.cpp

@@ -72,6 +72,13 @@ MainWindow::MainWindow(QobuzBackend *backend, QWidget *parent)
     // ---- Backend signals ----
     connect(m_backend, &QobuzBackend::loginSuccess,   this, &MainWindow::onLoginSuccess);
     connect(m_backend, &QobuzBackend::loginError,     this, &MainWindow::onLoginError);
+    connect(m_backend, &QobuzBackend::userLoaded, this, [this](const QJsonObject &user) {
+        const qint64 id = static_cast<qint64>(user["id"].toDouble());
+        if (id > 0) {
+            AppSettings::instance().setUserId(id);
+            m_library->refresh();  // re-load playlists with correct ownership now
+        }
+    });
     connect(m_backend, &QobuzBackend::favTracksLoaded,  this, &MainWindow::onFavTracksLoaded);
     connect(m_backend, &QobuzBackend::favAlbumsLoaded,  this, &MainWindow::onFavAlbumsLoaded);
     connect(m_backend, &QobuzBackend::favArtistsLoaded, this, &MainWindow::onFavArtistsLoaded);
@@ -199,7 +206,10 @@ void MainWindow::tryRestoreSession()
     const QString token = AppSettings::instance().authToken();
     if (!token.isEmpty()) {
         m_backend->setToken(token);
-        m_library->refresh();
+        if (AppSettings::instance().userId() == 0)
+            m_backend->getUser();  // userLoaded will call m_library->refresh()
+        else
+            m_library->refresh();
         const QString name = AppSettings::instance().displayName();
         statusBar()->showMessage(tr("Signed in as %1").arg(
             name.isEmpty() ? AppSettings::instance().userEmail() : name));
@@ -283,6 +293,15 @@ void MainWindow::onTrackChanged(const QJsonObject &track)
 
 void MainWindow::onFavTracksLoaded(const QJsonObject &result)
 {
+    // Cache fav IDs so the star indicator and context menu stay in sync
+    QSet<qint64> ids;
+    const QJsonArray items = result["items"].toArray();
+    for (const QJsonValue &v : items) {
+        const qint64 id = static_cast<qint64>(v.toObject()["id"].toDouble());
+        if (id > 0) ids.insert(id);
+    }
+    m_content->tracksList()->setFavTrackIds(ids);
+
     m_content->showFavTracks(result);
     statusBar()->showMessage(
         tr("%1 favorite tracks").arg(result["total"].toInt()), 4000);

src/mainwindow.hpp

@@ -13,7 +13,9 @@
 #include <QMainWindow>
 #include <QDockWidget>
 #include <QJsonObject>
+#include <QJsonArray>
 #include <QVector>
+#include <QSet>
 #include <QPair>
 #include <QString>
 

src/model/tracklistmodel.cpp

@@ -17,17 +17,27 @@ void TrackListModel::setTracks(const QJsonArray &tracks,
     m_tracks.clear();
     m_tracks.reserve(tracks.size());
 
+    // Parse into a temporary list first so we can detect multi-disc
+    QVector<TrackItem> parsed;
+    parsed.reserve(tracks.size());
+
     int seq = 1;
     for (const QJsonValue &v : tracks) {
         const QJsonObject t = v.toObject();
         TrackItem item;
         item.id               = static_cast<qint64>(t["id"].toDouble());
         item.playlistTrackId  = static_cast<qint64>(t["playlist_track_id"].toDouble());
-        item.title            = t["title"].toString();
+        item.discNumber       = t["media_number"].toInt(1);
         item.duration         = static_cast<qint64>(t["duration"].toDouble());
-        item.hiRes      = t["hires_streamable"].toBool();
-        item.streamable = t["streamable"].toBool(true);
-        item.raw        = t;
+        item.streamable       = t["streamable"].toBool(true);
+        item.hiRes            = t["hires_streamable"].toBool();
+        item.raw              = t;
+
+        // Combine title + version ("Melody" + "Vocal Remix" → "Melody (Vocal Remix)")
+        const QString base    = t["title"].toString();
+        const QString version = t["version"].toString().trimmed();
+        item.title = version.isEmpty() ? base
+                   : base + QStringLiteral(" (") + version + QLatin1Char(')');
 
         if (useSequential) {
             item.number = seq++;
@@ -48,17 +58,46 @@ void TrackListModel::setTracks(const QJsonArray &tracks,
         item.album   = album["title"].toString();
         item.albumId = album["id"].toString();
 
-        m_tracks.append(item);
+        parsed.append(item);
     }
 
-    // Re-apply sort silently inside the reset (no layout signals needed here)
-    if (m_sortColumn >= 0)
-        sortData(m_sortColumn, m_sortOrder);
+    // Multi-disc only makes sense for album context (not playlists / fav / search)
+    int maxDisc = 1;
+    if (!usePosition && !useSequential) {
+        for (const TrackItem &t : parsed)
+            maxDisc = qMax(maxDisc, t.discNumber);
+    }
+    m_hasMultipleDiscs = (maxDisc > 1);
+
+    if (m_hasMultipleDiscs) {
+        // Sort by disc then track number
+        std::stable_sort(parsed.begin(), parsed.end(), [](const TrackItem &a, const TrackItem &b) {
+            return a.discNumber != b.discNumber ? a.discNumber < b.discNumber
+                                               : a.number < b.number;
+        });
+        // Interleave disc header items
+        int currentDisc = -1;
+        for (const TrackItem &t : parsed) {
+            if (t.discNumber != currentDisc) {
+                TrackItem header;
+                header.isDiscHeader = true;
+                header.discNumber   = t.discNumber;
+                header.title        = tr("Disc %1").arg(t.discNumber);
+                m_tracks.append(header);
+                currentDisc = t.discNumber;
+            }
+            m_tracks.append(t);
+        }
+    } else {
+        m_tracks = parsed;
+        // Re-apply sort silently inside the reset
+        if (m_sortColumn >= 0)
+            sortData(m_sortColumn, m_sortOrder);
+    }
 
     endResetModel();
 
-    // Tell external listeners the sorted order is ready (e.g. PlayQueue sync)
-    if (m_sortColumn >= 0)
+    if (!m_hasMultipleDiscs && m_sortColumn >= 0)
         emit sortApplied();
 }
 
@@ -77,6 +116,36 @@ void TrackListModel::removeTrack(int row)
     endRemoveRows();
 }
 
+void TrackListModel::setFavIds(const QSet<qint64> &ids)
+{
+    m_favIds = ids;
+    if (!m_tracks.isEmpty())
+        emit dataChanged(index(0, ColTitle), index(rowCount() - 1, ColTitle),
+                         {Qt::DecorationRole});
+}
+
+void TrackListModel::addFavId(qint64 id)
+{
+    m_favIds.insert(id);
+    for (int r = 0; r < m_tracks.size(); ++r) {
+        if (m_tracks[r].id == id) {
+            const auto idx = index(r, ColTitle);
+            emit dataChanged(idx, idx, {Qt::DecorationRole});
+        }
+    }
+}
+
+void TrackListModel::removeFavId(qint64 id)
+{
+    m_favIds.remove(id);
+    for (int r = 0; r < m_tracks.size(); ++r) {
+        if (m_tracks[r].id == id) {
+            const auto idx = index(r, ColTitle);
+            emit dataChanged(idx, idx, {Qt::DecorationRole});
+        }
+    }
+}
+
 void TrackListModel::setPlayingId(qint64 id)
 {
     m_playingId = id;
@@ -85,6 +154,23 @@ void TrackListModel::setPlayingId(qint64 id)
                          {Qt::FontRole, Qt::DecorationRole});
 }
 
+Qt::ItemFlags TrackListModel::flags(const QModelIndex &index) const
+{
+    if (!index.isValid() || index.row() >= m_tracks.size())
+        return Qt::NoItemFlags;
+    if (m_tracks.at(index.row()).isDiscHeader)
+        return Qt::ItemIsEnabled;
+    return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
+}
+
+QVector<int> TrackListModel::discHeaderRows() const
+{
+    QVector<int> rows;
+    for (int i = 0; i < m_tracks.size(); ++i)
+        if (m_tracks[i].isDiscHeader) rows.append(i);
+    return rows;
+}
+
 int TrackListModel::rowCount(const QModelIndex &parent) const
 {
     return parent.isValid() ? 0 : m_tracks.size();
@@ -101,6 +187,19 @@ QVariant TrackListModel::data(const QModelIndex &index, int role) const
         return {};
 
     const TrackItem &t = m_tracks.at(index.row());
+
+    // Disc header rows: styled separator spanning all columns via setFirstColumnSpanned
+    if (t.isDiscHeader) {
+        if (role == Qt::DisplayRole && index.column() == ColNumber)
+            return t.title;
+        if (role == Qt::FontRole) {
+            QFont f; f.setBold(true); return f;
+        }
+        if (role == Qt::ForegroundRole)
+            return QColor(0xFF, 0xB2, 0x32);
+        return {};
+    }
+
     const bool isPlaying = (t.id == m_playingId && m_playingId != 0);
 
     if (role == Qt::DisplayRole) {
@@ -128,6 +227,10 @@ QVariant TrackListModel::data(const QModelIndex &index, int role) const
         return QIcon(QStringLiteral(":/res/icons/media-track-show-active.svg"));
     }
 
+    if (role == Qt::DecorationRole && index.column() == ColTitle && m_favIds.contains(t.id)) {
+        return QIcon(QStringLiteral(":/res/icons/starred-symbolic.svg"));
+    }
+
     if (role == TrackIdRole)         return t.id;
     if (role == TrackJsonRole)       return t.raw;
     if (role == HiResRole)           return t.hiRes;
@@ -179,7 +282,8 @@ void TrackListModel::sort(int column, Qt::SortOrder order)
     m_sortColumn = column;
     m_sortOrder  = order;
 
-    if (m_tracks.isEmpty()) return;
+    // Multi-disc albums keep their disc-ordered layout; don't re-sort
+    if (m_hasMultipleDiscs || m_tracks.isEmpty()) return;
 
     emit layoutAboutToBeChanged();
     sortData(column, order);
@@ -190,7 +294,8 @@ void TrackListModel::sort(int column, Qt::SortOrder order)
 
 QString TrackListModel::formatDuration(qint64 secs)
 {
-    const int m = static_cast<int>(secs / 60);
-    const int s = static_cast<int>(secs % 60);
+    if (secs < 0) secs = 0;
+    const qint64 m = secs / 60;
+    const qint64 s = secs % 60;
     return QStringLiteral("%1:%2").arg(m).arg(s, 2, 10, QLatin1Char('0'));
 }

src/model/tracklistmodel.hpp

@@ -4,12 +4,15 @@
 #include <QJsonArray>
 #include <QJsonObject>
 #include <QVector>
+#include <QSet>
 #include <QFont>
 
 struct TrackItem {
     qint64  id              = 0;
     qint64  playlistTrackId = 0;
     int     number          = 0;
+    int     discNumber      = 1;
+    bool    isDiscHeader    = false;
     QString title;
     QString artist;
     QString album;
@@ -52,17 +55,27 @@ public:
     void setPlayingId(qint64 id);
     qint64 playingId() const { return m_playingId; }
 
+    void setFavIds(const QSet<qint64> &ids);
+    void addFavId(qint64 id);
+    void removeFavId(qint64 id);
+    bool isFav(qint64 id) const { return m_favIds.contains(id); }
+
+    bool hasMultipleDiscs() const { return m_hasMultipleDiscs; }
+    QVector<int> discHeaderRows() const;
+
+    Qt::ItemFlags flags(const QModelIndex &index) const override;
+
     /// Optimistically remove a row (e.g. after deleting from playlist).
     void removeTrack(int row);
 
     const TrackItem &trackAt(int row) const { return m_tracks.at(row); }
 
-    // Returns the current (possibly sorted) raw JSON objects in display order.
+    // Returns the current (possibly sorted) raw JSON objects in display order, skipping disc headers.
     QJsonArray currentTracksJson() const
     {
         QJsonArray out;
         for (const auto &t : m_tracks)
-            out.append(t.raw);
+            if (!t.isDiscHeader) out.append(t.raw);
         return out;
     }
 
@@ -81,7 +94,9 @@ signals:
 
 private:
     QVector<TrackItem> m_tracks;
-    qint64 m_playingId  = 0;
+    QSet<qint64>       m_favIds;
+    qint64 m_playingId        = 0;
+    bool   m_hasMultipleDiscs = false;
     int    m_sortColumn = -1;
     Qt::SortOrder m_sortOrder = Qt::AscendingOrder;
 

src/playqueue.hpp

@@ -107,6 +107,14 @@ public:
         emit queueChanged();
     }
 
+    /// Shuffle the current queue once without changing the global shuffle flag.
+    void shuffleNow()
+    {
+        if (m_queue.isEmpty()) return;
+        shuffleQueue(m_index);
+        emit queueChanged();
+    }
+
     // ---- Play-next prepend queue (like "Add to queue" ----
 
     void addToQueue(const QJsonObject &track)

src/view/albumlistview.hpp

@@ -47,13 +47,27 @@ public:
 
         for (const auto &v : albums) {
             const QJsonObject a  = v.toObject();
-            const QString id     = a["id"].toString();
-            const QString title  = a["title"].toString();
-            const QString artist = a["artist"].toObject()["name"].toString();
-            const QString date   = a["release_date_original"].toString();
-            const QString year   = date.left(4);
-            const int tracks     = a["tracks_count"].toInt();
-            const bool hiRes     = a["hires_streamable"].toBool();
+            const QString id      = a["id"].toString();
+            const QString base    = a["title"].toString();
+            const QString ver     = a["version"].toString().trimmed();
+            const QString title   = ver.isEmpty() ? base : base + QStringLiteral(" (") + ver + QLatin1Char(')');
+
+            // artist.name is either a plain string (old AlbumDto) or {display: ...} (artist/page)
+            const QJsonValue artistNameVal = a["artist"].toObject()["name"];
+            const QString artist = artistNameVal.isObject()
+                ? artistNameVal.toObject()["display"].toString()
+                : artistNameVal.toString();
+
+            // year: release_date_original (old) or dates.original (artist/page)
+            const QString date = a["release_date_original"].toString();
+            const QString year = date.isEmpty()
+                ? a["dates"].toObject()["original"].toString().left(4)
+                : date.left(4);
+
+            const int tracks  = a["tracks_count"].toInt();
+            // hires: flat field (old) or rights.hires_streamable (artist/page)
+            const bool hiRes  = a["hires_streamable"].toBool()
+                             || a["rights"].toObject()["hires_streamable"].toBool();
 
             auto *item = new QTreeWidgetItem(this);
             if (hiRes) {

src/view/artistview.cpp

@@ -0,0 +1,185 @@
+#include "artistview.hpp"
+#include "albumlistview.hpp"
+
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QScrollArea>
+#include <QFont>
+#include <QJsonValue>
+#include <QRegularExpression>
+
+// ---------------------------------------------------------------------------
+// ArtistSection
+// ---------------------------------------------------------------------------
+
+ArtistSection::ArtistSection(const QString &title, QWidget *parent)
+    : QWidget(parent)
+    , m_baseTitle(title)
+{
+    auto *layout = new QVBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->setSpacing(0);
+
+    m_toggle = new QToolButton(this);
+    m_toggle->setCheckable(true);
+    m_toggle->setChecked(true);
+    m_toggle->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
+    m_toggle->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+    m_toggle->setStyleSheet(QStringLiteral(
+        "QToolButton { text-align: left; font-weight: bold; padding: 4px 6px;"
+        "  border: none; border-bottom: 1px solid #333; }"
+        "QToolButton:hover { background: #1e1e1e; }"
+    ));
+    updateToggleText(0);
+    layout->addWidget(m_toggle);
+
+    m_list = new AlbumListView(this);
+    layout->addWidget(m_list);
+
+    connect(m_toggle, &QToolButton::toggled, m_list, &AlbumListView::setVisible);
+    connect(m_list, &AlbumListView::albumSelected, this, &ArtistSection::albumSelected);
+}
+
+void ArtistSection::setAlbums(const QJsonArray &albums)
+{
+    m_list->setAlbums(albums);
+    updateToggleText(albums.size());
+}
+
+bool ArtistSection::isEmpty() const
+{
+    return m_list->topLevelItemCount() == 0;
+}
+
+void ArtistSection::updateToggleText(int count)
+{
+    const QString arrow = m_toggle->isChecked() ? QStringLiteral("▼ ") : QStringLiteral("▶ ");
+    const QString text  = count > 0
+        ? QStringLiteral("%1%2  (%3)").arg(arrow, m_baseTitle).arg(count)
+        : arrow + m_baseTitle;
+    m_toggle->setText(text);
+
+    // Keep arrow in sync when toggled
+    disconnect(m_toggle, &QToolButton::toggled, nullptr, nullptr);
+    connect(m_toggle, &QToolButton::toggled, m_list, &AlbumListView::setVisible);
+    connect(m_toggle, &QToolButton::toggled, this, [this, count](bool open) {
+        const QString a = open ? QStringLiteral("▼ ") : QStringLiteral("▶ ");
+        const QString t = count > 0
+            ? QStringLiteral("%1%2  (%3)").arg(a, m_baseTitle).arg(count)
+            : a + m_baseTitle;
+        m_toggle->setText(t);
+    });
+}
+
+// ---------------------------------------------------------------------------
+// ArtistView
+// ---------------------------------------------------------------------------
+
+ArtistView::ArtistView(QWidget *parent)
+    : QWidget(parent)
+{
+    auto *outerLayout = new QVBoxLayout(this);
+    outerLayout->setContentsMargins(8, 8, 8, 8);
+    outerLayout->setSpacing(6);
+
+    m_nameLabel = new QLabel(this);
+    QFont f = m_nameLabel->font();
+    f.setPointSize(f.pointSize() + 4);
+    f.setBold(true);
+    m_nameLabel->setFont(f);
+    outerLayout->addWidget(m_nameLabel);
+
+    m_bioLabel = new QLabel(this);
+    m_bioLabel->setWordWrap(true);
+    m_bioLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
+    m_bioLabel->setMaximumHeight(80);
+    outerLayout->addWidget(m_bioLabel);
+
+    // Scrollable sections area
+    auto *scroll = new QScrollArea(this);
+    scroll->setWidgetResizable(true);
+    scroll->setFrameShape(QFrame::NoFrame);
+
+    auto *content = new QWidget(scroll);
+    auto *sectLayout = new QVBoxLayout(content);
+    sectLayout->setContentsMargins(0, 0, 0, 0);
+    sectLayout->setSpacing(8);
+
+    m_secAlbums       = new ArtistSection(tr("Albums"), content);
+    m_secEps          = new ArtistSection(tr("Singles & EPs"), content);
+    m_secLive         = new ArtistSection(tr("Live"), content);
+    m_secCompilations = new ArtistSection(tr("Compilations"), content);
+    m_secOther        = new ArtistSection(tr("Other"), content);
+
+    sectLayout->addWidget(m_secAlbums);
+    sectLayout->addWidget(m_secEps);
+    sectLayout->addWidget(m_secLive);
+    sectLayout->addWidget(m_secCompilations);
+    sectLayout->addWidget(m_secOther);
+    sectLayout->addStretch();
+
+    scroll->setWidget(content);
+    outerLayout->addWidget(scroll, 1);
+
+    connect(m_secAlbums,       &ArtistSection::albumSelected, this, &ArtistView::albumSelected);
+    connect(m_secEps,          &ArtistSection::albumSelected, this, &ArtistView::albumSelected);
+    connect(m_secLive,         &ArtistSection::albumSelected, this, &ArtistView::albumSelected);
+    connect(m_secCompilations, &ArtistSection::albumSelected, this, &ArtistView::albumSelected);
+    connect(m_secOther,        &ArtistSection::albumSelected, this, &ArtistView::albumSelected);
+}
+
+void ArtistView::setArtist(const QJsonObject &artist)
+{
+    // artist/page: name is {"display": "..."}
+    m_nameLabel->setText(artist["name"].toObject()["display"].toString());
+
+    // biography.content is HTML — strip tags for safe plain-text display
+    const QString bioHtml = artist["biography"].toObject()["content"].toString();
+    if (!bioHtml.isEmpty()) {
+        QString plain = bioHtml;
+        // Strip HTML entities and tags to prevent rendering injected content
+        plain.remove(QRegularExpression(QStringLiteral("<[^>]*>")));
+        plain.replace(QStringLiteral("&amp;"),  QStringLiteral("&"));
+        plain.replace(QStringLiteral("&lt;"),   QStringLiteral("<"));
+        plain.replace(QStringLiteral("&gt;"),   QStringLiteral(">"));
+        plain.replace(QStringLiteral("&quot;"), QStringLiteral("\""));
+        plain.replace(QStringLiteral("&#39;"),  QStringLiteral("'"));
+        plain.replace(QStringLiteral("&nbsp;"), QStringLiteral(" "));
+        plain = plain.trimmed();
+        m_bioLabel->setTextFormat(Qt::PlainText);
+        m_bioLabel->setText(plain);
+        m_bioLabel->setVisible(!plain.isEmpty());
+    } else {
+        m_bioLabel->setVisible(false);
+    }
+
+    // releases is an array of {type, has_more, items[]}
+    // types we care about: "album", "epSingle", "live"
+    const QJsonArray releases = artist["releases"].toArray();
+    QJsonArray albums, eps, live, compilations;
+    for (const QJsonValue &rv : releases) {
+        const QJsonObject rg    = rv.toObject();
+        const QString     type  = rg["type"].toString();
+        const QJsonArray  items = rg["items"].toArray();
+        if (type == QStringLiteral("album"))
+            albums = items;
+        else if (type == QStringLiteral("epSingle"))
+            eps = items;
+        else if (type == QStringLiteral("live"))
+            live = items;
+        else if (type == QStringLiteral("compilation"))
+            compilations = items;
+    }
+
+    m_secAlbums->setAlbums(albums);
+    m_secEps->setAlbums(eps);
+    m_secLive->setAlbums(live);
+    m_secCompilations->setAlbums(compilations);
+    m_secOther->setAlbums({});
+
+    m_secAlbums->setVisible(!m_secAlbums->isEmpty());
+    m_secEps->setVisible(!m_secEps->isEmpty());
+    m_secLive->setVisible(!m_secLive->isEmpty());
+    m_secCompilations->setVisible(!m_secCompilations->isEmpty());
+    m_secOther->setVisible(false);
+}

src/view/artistview.hpp

@@ -3,62 +3,54 @@
 #include "albumlistview.hpp"
 
 #include <QWidget>
-#include <QVBoxLayout>
 #include <QLabel>
-#include <QFont>
+#include <QToolButton>
 #include <QJsonObject>
 #include <QJsonArray>
 
-/// Artist detail page: name, biography summary, and their album list.
-class ArtistView : public QWidget
+class AlbumListView;
+
+/// One collapsible section (e.g. "Albums", "EPs & Singles") inside ArtistView.
+class ArtistSection : public QWidget
 {
     Q_OBJECT
-
 public:
-    explicit ArtistView(QWidget *parent = nullptr) : QWidget(parent)
-    {
-        auto *layout = new QVBoxLayout(this);
-        layout->setContentsMargins(8, 8, 8, 8);
-        layout->setSpacing(6);
+    explicit ArtistSection(const QString &title, QWidget *parent = nullptr);
 
-        m_nameLabel = new QLabel(this);
-        QFont f = m_nameLabel->font();
-        f.setPointSize(f.pointSize() + 4);
-        f.setBold(true);
-        m_nameLabel->setFont(f);
-
-        m_bioLabel = new QLabel(this);
-        m_bioLabel->setWordWrap(true);
-        m_bioLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
-        m_bioLabel->setMaximumHeight(80);
-
-        m_albums = new AlbumListView(this);
-
-        layout->addWidget(m_nameLabel);
-        layout->addWidget(m_bioLabel);
-        layout->addWidget(m_albums, 1);
-
-        connect(m_albums, &AlbumListView::albumSelected,
-                this, &ArtistView::albumSelected);
-    }
-
-    void setArtist(const QJsonObject &artist)
-    {
-        m_nameLabel->setText(artist["name"].toString());
-
-        const QString summary = artist["biography"].toObject()["summary"].toString();
-        m_bioLabel->setText(summary);
-        m_bioLabel->setVisible(!summary.isEmpty());
-
-        const QJsonArray albums = artist["albums"].toObject()["items"].toArray();
-        m_albums->setAlbums(albums);
-    }
+    void setAlbums(const QJsonArray &albums);
+    bool isEmpty() const;
 
 signals:
     void albumSelected(const QString &albumId);
 
 private:
-    QLabel        *m_nameLabel = nullptr;
-    QLabel        *m_bioLabel  = nullptr;
-    AlbumListView *m_albums    = nullptr;
+    QString        m_baseTitle;
+    QToolButton   *m_toggle = nullptr;
+    AlbumListView *m_list   = nullptr;
+
+    void updateToggleText(int count);
+};
+
+/// Artist detail page: name, biography, and albums split into collapsible sections
+/// (Albums / EPs & Singles / Other) keyed on the release_type field.
+class ArtistView : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ArtistView(QWidget *parent = nullptr);
+
+    void setArtist(const QJsonObject &artist);
+
+signals:
+    void albumSelected(const QString &albumId);
+
+private:
+    QLabel        *m_nameLabel  = nullptr;
+    QLabel        *m_bioLabel   = nullptr;
+    ArtistSection *m_secAlbums        = nullptr;
+    ArtistSection *m_secEps           = nullptr;
+    ArtistSection *m_secLive          = nullptr;
+    ArtistSection *m_secCompilations  = nullptr;
+    ArtistSection *m_secOther         = nullptr;
 };

src/view/context/view.cpp

@@ -22,11 +22,7 @@ View::View(QobuzBackend *backend, QWidget *parent)
     layout->setContentsMargins(8, 8, 8, 8);
     layout->setSpacing(6);
 
-    m_albumArt = new QLabel(container);
-    m_albumArt->setAlignment(Qt::AlignCenter);
-    m_albumArt->setStyleSheet(QStringLiteral(
-        "background: #1a1a1a; border-radius: 4px;"));
-    m_albumArt->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+    m_albumArt = new ArtWidget(container);
     layout->addWidget(m_albumArt);
 
     m_title = new QLabel(tr("Not playing"), container);
@@ -45,7 +41,6 @@ View::View(QobuzBackend *backend, QWidget *parent)
 
     layout->addStretch();
     setWidget(container);
-    setMinimumWidth(160);
 
     connect(m_backend, &QobuzBackend::trackChanged, this, &View::onTrackChanged);
 }
@@ -60,7 +55,6 @@ void View::onTrackChanged(const QJsonObject &track)
     m_title->setText(title.isEmpty() ? tr("Not playing") : title);
     m_artist->setText(artist);
 
-    // Prefer "large" image, fall back to "small"
     const QJsonObject img = track["album"].toObject()["image"].toObject();
     QString artUrl = img["large"].toString();
     if (artUrl.isEmpty())
@@ -77,26 +71,9 @@ void View::onArtReady(QNetworkReply *reply)
     reply->deleteLater();
     if (reply->error() != QNetworkReply::NoError)
         return;
-    if (m_artPixmap.loadFromData(reply->readAll()))
-        scaleArtToWidth();
-}
-
-void View::resizeEvent(QResizeEvent *event)
-{
-    QDockWidget::resizeEvent(event);
-    if (m_artPixmap.isNull()) return;
-    // Use the new dock width from the event so we don't lag behind the layout
-    const int side = qMax(32, event->size().width() - 16);
-    m_albumArt->setFixedHeight(side);
-    m_albumArt->setPixmap(m_artPixmap.scaled(side, side, Qt::KeepAspectRatio, Qt::SmoothTransformation));
-}
-
-void View::scaleArtToWidth()
-{
-    if (m_artPixmap.isNull()) return;
-    const int side = qMax(32, width() - 16);
-    m_albumArt->setFixedHeight(side);
-    m_albumArt->setPixmap(m_artPixmap.scaled(side, side, Qt::KeepAspectRatio, Qt::SmoothTransformation));
+    QPixmap pix;
+    if (pix.loadFromData(reply->readAll()))
+        m_albumArt->setPixmap(pix);
 }
 
 } // namespace Context

src/view/context/view.hpp

@@ -3,15 +3,49 @@
 #include "../../backend/qobuzbackend.hpp"
 
 #include <QDockWidget>
+#include <QWidget>
 #include <QLabel>
 #include <QPixmap>
-#include <QResizeEvent>
+#include <QPainter>
+#include <QPaintEvent>
 #include <QNetworkAccessManager>
 #include <QNetworkReply>
 #include <QJsonObject>
 
 namespace Context
 {
+    /// Square art widget: always as wide as its parent allows, height follows width.
+    class ArtWidget : public QWidget
+    {
+    public:
+        explicit ArtWidget(QWidget *parent = nullptr) : QWidget(parent)
+        {
+            setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+        }
+
+        void setPixmap(const QPixmap &px) { m_pix = px; update(); }
+        bool hasHeightForWidth() const override { return true; }
+        int  heightForWidth(int w) const override { return w; }
+
+    protected:
+        void paintEvent(QPaintEvent *) override
+        {
+            QPainter p(this);
+            if (m_pix.isNull()) {
+                p.fillRect(rect(), QColor(0x1a, 0x1a, 0x1a));
+                return;
+            }
+            const QPixmap scaled = m_pix.scaled(size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
+            p.fillRect(rect(), QColor(0x1a, 0x1a, 0x1a));
+            p.drawPixmap((width()  - scaled.width())  / 2,
+                         (height() - scaled.height()) / 2,
+                         scaled);
+        }
+
+    private:
+        QPixmap m_pix;
+    };
+
     class View : public QDockWidget
     {
         Q_OBJECT
@@ -23,18 +57,12 @@ namespace Context
         void onTrackChanged(const QJsonObject &track);
         void onArtReady(QNetworkReply *reply);
 
-    protected:
-        void resizeEvent(QResizeEvent *event) override;
-
     private:
-        void scaleArtToWidth();
-
         QobuzBackend          *m_backend       = nullptr;
-        QLabel                *m_albumArt      = nullptr;
+        ArtWidget             *m_albumArt      = nullptr;
         QLabel                *m_title         = nullptr;
         QLabel                *m_artist        = nullptr;
         QNetworkAccessManager *m_nam           = nullptr;
         QString                m_currentArtUrl;
-        QPixmap                m_artPixmap;
     };
 } // namespace Context

src/view/maincontent.cpp

@@ -36,6 +36,11 @@ MainContent::MainContent(QobuzBackend *backend, PlayQueue *queue, QWidget *paren
                      [this] { m_tracks->playAll(false); });
     QObject::connect(m_header->shuffleButton(), &QPushButton::clicked,
                      [this] { m_tracks->playAll(true); });
+    QObject::connect(m_header->subtitleButton(), &QPushButton::clicked,
+                     [this] {
+        const qint64 id = m_header->artistId();
+        if (id > 0) emit artistRequested(id);
+    });
 
     m_albumList  = new AlbumListView(this);
     m_artistList = new ArtistListView(this);

src/view/maintoolbar.cpp

@@ -150,8 +150,8 @@ void MainToolBar::setCurrentTrack(const QJsonObject &track)
 void MainToolBar::updateProgress(quint64 position, quint64 duration)
 {
     if (m_seeking) return;
-    const int sliderPos = duration > 0
-        ? static_cast<int>(position * 1000 / duration) : 0;
+    const int sliderPos = (duration > 0)
+        ? static_cast<int>(qMin(position * 1000 / duration, quint64(1000))) : 0;
     m_progress->blockSignals(true);
     m_progress->setValue(sliderPos);
     m_progress->blockSignals(false);

src/view/queuepanel.cpp

@@ -173,7 +173,9 @@ void QueuePanel::refresh()
 
     for (int i = 0; i < upcoming.size(); ++i) {
         const QJsonObject &t = upcoming.at(i);
-        const QString title  = t["title"].toString();
+        const QString base    = t["title"].toString();
+        const QString ver     = t["version"].toString().trimmed();
+        const QString title   = ver.isEmpty() ? base : base + QStringLiteral(" (") + ver + QLatin1Char(')');
         const QString artist = t["performer"].toObject()["name"].toString().isEmpty()
             ? t["album"].toObject()["artist"].toObject()["name"].toString()
             : t["performer"].toObject()["name"].toString();

src/view/trackcontextheader.hpp

@@ -49,11 +49,16 @@ public:
         m_title->setWordWrap(true);
         vlay->addWidget(m_title);
 
-        m_subtitle = new QLabel(info);
+        m_subtitle = new QPushButton(info);
+        m_subtitle->setFlat(true);
+        m_subtitle->setStyleSheet(QStringLiteral(
+            "QPushButton { border: none; background: none; text-align: left; padding: 0; margin: 0; }"
+            "QPushButton:enabled:hover { color: #FFB232; }"
+            "QPushButton:!enabled { color: palette(text); }"
+        ));
         QFont sf = m_subtitle->font();
         sf.setPointSize(sf.pointSize() + 1);
         m_subtitle->setFont(sf);
-        m_subtitle->setWordWrap(true);
         vlay->addWidget(m_subtitle);
 
         m_meta = new QLabel(info);
@@ -90,6 +95,7 @@ public:
 
         btnRow->addStretch();
         vlay->addLayout(btnRow);
+        vlay->addStretch(1);
 
         hlay->addWidget(info, 1);
 
@@ -108,10 +114,16 @@ public:
     QPushButton *playButton()    { return m_playBtn; }
     QPushButton *shuffleButton() { return m_shuffleBtn; }
 
+    QPushButton *subtitleButton() { return m_subtitle; }
+    qint64 artistId() const      { return m_artistId; }
+
     void setAlbum(const QJsonObject &album)
     {
         m_title->setText(album["title"].toString());
+        m_artistId = static_cast<qint64>(album["artist"].toObject()["id"].toDouble());
         m_subtitle->setText(album["artist"].toObject()["name"].toString());
+        m_subtitle->setEnabled(m_artistId > 0);
+        m_subtitle->setCursor(m_artistId > 0 ? Qt::PointingHandCursor : Qt::ArrowCursor);
         m_meta->setText(buildAlbumMeta(album));
         fetchArt(album["image"].toObject());
         show();
@@ -120,9 +132,12 @@ public:
     void setPlaylist(const QJsonObject &playlist)
     {
         m_title->setText(playlist["name"].toString());
+        m_artistId = 0;
         const QString desc  = playlist["description"].toString();
         const QString owner = playlist["owner"].toObject()["name"].toString();
         m_subtitle->setText(desc.isEmpty() ? owner : desc);
+        m_subtitle->setEnabled(false);
+        m_subtitle->setCursor(Qt::ArrowCursor);
         m_meta->setText(buildPlaylistMeta(playlist));
 
         // Try images300 → images150 → images (API returns mosaic arrays, not image_rectangle)
@@ -200,10 +215,11 @@ private:
 
     QLabel                *m_art        = nullptr;
     QLabel                *m_title      = nullptr;
-    QLabel                *m_subtitle   = nullptr;
+    QPushButton           *m_subtitle   = nullptr;
     QLabel                *m_meta       = nullptr;
     QPushButton           *m_playBtn    = nullptr;
     QPushButton           *m_shuffleBtn = nullptr;
     QNetworkAccessManager *m_nam        = nullptr;
     QString                m_currentArtUrl;
+    qint64                 m_artistId   = 0;
 };

src/widget/volumebutton.hpp

@@ -4,10 +4,9 @@
 #include "../util/icon.hpp"
 
 #include <QToolButton>
-#include <QWidgetAction>
-#include <QMenu>
-#include <QLabel>
+#include <QFrame>
 #include <QVBoxLayout>
+#include <QLabel>
 
 /// A toolbar button that shows a volume slider popup when clicked.
 class VolumeButton : public QToolButton
@@ -17,33 +16,36 @@ class VolumeButton : public QToolButton
 public:
     explicit VolumeButton(QWidget *parent = nullptr) : QToolButton(parent)
     {
-        setPopupMode(QToolButton::InstantPopup);
         setIcon(Icon::volumeHigh());
 
-        auto *menu   = new QMenu(this);
-        auto *widget = new QWidget(menu);
-        widget->setMinimumWidth(72);
-        auto *layout = new QVBoxLayout(widget);
-        layout->setContentsMargins(6, 6, 6, 6);
+        // Qt::Popup closes automatically when the user clicks outside.
+        m_popup = new QFrame(this, Qt::Popup);
+        m_popup->setFrameShape(QFrame::StyledPanel);
+        m_popup->setFrameShadow(QFrame::Raised);
 
-        m_label  = new QLabel("80%", widget);
+        auto *layout = new QVBoxLayout(m_popup);
+        layout->setContentsMargins(10, 10, 10, 10);
+        layout->setSpacing(6);
+
+        m_label = new QLabel(QStringLiteral("80%"), m_popup);
         m_label->setAlignment(Qt::AlignCenter);
+        layout->addWidget(m_label);
 
-        m_slider = new ClickableSlider(Qt::Vertical, widget);
+        m_slider = new ClickableSlider(Qt::Vertical, m_popup);
         m_slider->setRange(0, 100);
         m_slider->setValue(80);
         m_slider->setFixedHeight(120);
+        layout->addWidget(m_slider, 0, Qt::AlignHCenter);
 
-        layout->addWidget(m_label);
-        layout->addWidget(m_slider);
-
-        auto *action = new QWidgetAction(menu);
-        action->setDefaultWidget(widget);
-        menu->addAction(action);
-        setMenu(menu);
+        // Size the popup at its maximum (label = "100%") and lock it
+        m_label->setText(QStringLiteral("100%"));
+        m_popup->adjustSize();
+        m_popup->setFixedSize(m_popup->sizeHint());
+        m_label->setText(QStringLiteral("80%"));
 
+        connect(this, &QToolButton::clicked, this, &VolumeButton::togglePopup);
         connect(m_slider, &QSlider::valueChanged, this, [this](int v) {
-            m_label->setText(QString::number(v) + "%");
+            m_label->setText(QString::number(v) + QStringLiteral("%"));
             updateIcon(v);
             emit volumeChanged(v);
         });
@@ -56,14 +58,31 @@ public:
         m_slider->blockSignals(true);
         m_slider->setValue(v);
         m_slider->blockSignals(false);
-        m_label->setText(QString::number(v) + "%");
+        m_label->setText(QString::number(v) + QStringLiteral("%"));
         updateIcon(v);
     }
 
 signals:
     void volumeChanged(int volume);
 
+private slots:
+    void togglePopup()
+    {
+        if (m_popup->isVisible()) {
+            m_popup->hide();
+            return;
+        }
+        // Centre popup horizontally over button, place below it
+        const QPoint global = mapToGlobal(
+            QPoint(width() / 2 - m_popup->width() / 2,
+                   height() + 4));
+        m_popup->move(global);
+        m_popup->show();
+        m_popup->raise();
+    }
+
 private:
+    QFrame          *m_popup  = nullptr;
     ClickableSlider *m_slider = nullptr;
     QLabel          *m_label  = nullptr;