feat: airplay and chromecast for music

utils/jellyfin/audio/getAudioContentType.ts

@@ -0,0 +1,20 @@
+/**
+ * Maps Jellyfin audio container types to MIME types for Chromecast
+ */
+export const getAudioContentType = (container?: string | null): string => {
+  if (!container) return "audio/mpeg";
+
+  const map: Record<string, string> = {
+    mp3: "audio/mpeg",
+    aac: "audio/aac",
+    m4a: "audio/mp4",
+    flac: "audio/flac",
+    wav: "audio/wav",
+    opus: "audio/opus",
+    ogg: "audio/ogg",
+    wma: "audio/x-ms-wma",
+    webm: "audio/webm",
+  };
+
+  return map[container.toLowerCase()] ?? "audio/mpeg";
+};