Index based Queue
Add’s support for specifying and querying the play queue with index.
Opensubsonic:
OpenSubsonic version: 1
OpenSubsonic extension name indexBasedQueue (As returned by getOpenSubsonicExtensions)
When a server supports this extension, it provides two new endpoints: savePlayQueueByIndex and getPlayQueueByIndex.
Version 1
You can now save a play queue using an index instead of the current song ID, allowing for duplicate items in the queue. Similarly, the queue can be retrieved with the current song index.