diff --git a/src-tauri/src/cast/commands.rs b/src-tauri/src/cast/commands.rs
index 72ccd83e2..c992b4592 100644
--- a/src-tauri/src/cast/commands.rs
+++ b/src-tauri/src/cast/commands.rs
@@ -273,6 +273,7 @@ fn content_type_from_format(format: &AudioFormat) -> &'static str {
         AudioFormat::Wav => "audio/wav",
         AudioFormat::Aiff => "audio/aiff",
         AudioFormat::Ape => "audio/ape",
+        AudioFormat::Mp3 => "audio/mpeg",
         AudioFormat::Unknown => "application/octet-stream",
     }
 }
diff --git a/src-tauri/src/library/database.rs b/src-tauri/src/library/database.rs
index d12c52f27..4cc1906ad 100644
--- a/src-tauri/src/library/database.rs
+++ b/src-tauri/src/library/database.rs
@@ -708,6 +708,7 @@ impl LibraryDatabase {
             "WAV" => AudioFormat::Wav,
             "AIFF" => AudioFormat::Aiff,
             "APE" => AudioFormat::Ape,
+            "MP3" => AudioFormat::Mp3,
             _ => AudioFormat::Unknown,
         }
     }
diff --git a/src-tauri/src/library/metadata.rs b/src-tauri/src/library/metadata.rs
index 3785a1e56..26487959f 100644
--- a/src-tauri/src/library/metadata.rs
+++ b/src-tauri/src/library/metadata.rs
@@ -414,6 +414,7 @@ impl MetadataExtractor {
             Some("wav") => AudioFormat::Wav,
             Some("aiff") | Some("aif") => AudioFormat::Aiff,
             Some("ape") => AudioFormat::Ape,
+            Some("mp3") => AudioFormat::Mp3,
             _ => AudioFormat::Unknown,
         }
     }
@@ -665,7 +666,7 @@ mod tests {
         );
         assert_eq!(
             MetadataExtractor::detect_format(Path::new("test.mp3")),
-            AudioFormat::Unknown
+            AudioFormat::Mp3
         );
     }
 }
diff --git a/src-tauri/src/library/models.rs b/src-tauri/src/library/models.rs
index c9396bbeb..cce3af511 100644
--- a/src-tauri/src/library/models.rs
+++ b/src-tauri/src/library/models.rs
@@ -10,6 +10,7 @@ pub enum AudioFormat {
     Wav,
     Aiff,
     Ape,
+    Mp3,
     Unknown,
 }
 
@@ -27,6 +28,7 @@ impl std::fmt::Display for AudioFormat {
             AudioFormat::Wav => write!(f, "WAV"),
             AudioFormat::Aiff => write!(f, "AIFF"),
             AudioFormat::Ape => write!(f, "APE"),
+            AudioFormat::Mp3 => write!(f, "MP3"),
             AudioFormat::Unknown => write!(f, "Unknown"),
         }
     }
diff --git a/src-tauri/src/library/scanner.rs b/src-tauri/src/library/scanner.rs
index 36dd23fff..cd51eabed 100644
--- a/src-tauri/src/library/scanner.rs
+++ b/src-tauri/src/library/scanner.rs
@@ -6,7 +6,7 @@ use walkdir::WalkDir;
 use crate::library::LibraryError;
 
 /// Supported audio file extensions
-const SUPPORTED_AUDIO_EXTENSIONS: &[&str] = &["flac", "m4a", "wav", "aiff", "aif", "ape"];
+const SUPPORTED_AUDIO_EXTENSIONS: &[&str] = &["flac", "m4a", "wav", "aiff", "aif", "ape", "mp3"];
 
 /// CUE file extension
 const CUE_EXTENSION: &str = "cue";
@@ -105,7 +105,7 @@ mod tests {
         assert!(LibraryScanner::is_supported_audio_extension("flac"));
         assert!(LibraryScanner::is_supported_audio_extension("wav"));
         assert!(LibraryScanner::is_supported_audio_extension("m4a"));
-        assert!(!LibraryScanner::is_supported_audio_extension("mp3"));
+        assert!(LibraryScanner::is_supported_audio_extension("mp3"));
         assert!(!LibraryScanner::is_supported_audio_extension("txt"));
     }
 }