Successful response from jitQueue.playNow.
jitQueue.playNow
Index of the shadow playlist, which the call creates or takes over when this session has none; -1 only if foobar2000 could not create it.
-1
Always true here; a failed call resolves with ApiFailure instead.
true
ApiFailure
The identifier given.
Successful response from
jitQueue.playNow.