fix + add transcode

src/route/track.rs

@@ -23,3 +23,9 @@ pub async fn track_audio_route(track_id: &str, lib: &State<Libary>) -> Option<Na
         .await
         .ok()
 }
+
+#[get("/track/<track_id>/audio/opus128")]
+pub async fn track_audio_opus128_route(track_id: &str, lib: &State<Libary>) -> Option<NamedFile> {
+    let track = lib.get_track_by_id(track_id).await?;
+    NamedFile::open(track.get_opus(128)).await.ok()
+}