Tracks in the buffer.
Identifier of the playing track; empty when none.
Whether a JIT session is active.
Identifier of the buffered next track; empty when none.
Index of the shadow playlist; -1 until a jitQueue.playNow or jitQueue.preloadBatch of this foobar2000 session creates or takes it over, even when one is left from an earlier session, and again after the playlist is removed, which also ends the JIT session. Stopping or clearing keeps the index of the emptied playlist.
The session state.
Always true here; a failed call resolves with ApiFailure instead.
Successful response from
jitQueue.getState.