diff --git a/allstarr/Controllers/JellyfinController.cs b/allstarr/Controllers/JellyfinController.cs
index 35eb233..b58074a 100644
--- a/allstarr/Controllers/JellyfinController.cs
+++ b/allstarr/Controllers/JellyfinController.cs
@@ -867,12 +867,34 @@ public class JellyfinController : ControllerBase
     }
 
     /// <summary>
-    /// Universal audio endpoint that redirects to the stream endpoint.
+    /// Universal audio endpoint - handles transcoding, format negotiation, and adaptive streaming.
+    /// This is the primary endpoint used by Jellyfin Web and most clients.
     /// </summary>
     [HttpGet("Audio/{itemId}/universal")]
-    public Task<IActionResult> UniversalAudio(string itemId)
+    [HttpHead("Audio/{itemId}/universal")]
+    public async Task<IActionResult> UniversalAudio(string itemId)
     {
-        return StreamAudio(itemId);
+        if (string.IsNullOrWhiteSpace(itemId))
+        {
+            return BadRequest(new { error = "Missing item ID" });
+        }
+
+        var (isExternal, provider, externalId) = _localLibraryService.ParseSongId(itemId);
+
+        if (!isExternal)
+        {
+            // For local content, proxy the universal endpoint with all query parameters
+            var fullPath = $"Audio/{itemId}/universal";
+            if (Request.QueryString.HasValue)
+            {
+                fullPath = $"{fullPath}{Request.QueryString.Value}";
+            }
+
+            return await ProxyJellyfinStream(fullPath, itemId);
+        }
+
+        // For external content, use simple streaming (no transcoding support yet)
+        return await StreamExternalContent(provider!, externalId!);
     }
 
     #endregion