remove
Removes the source from the active playback session. Trying to remove the active source has no effect and will result in a no-op.
Has no effect if there is no active playback session or if the source is not part of it.
Removes the source at index from the active playback session. Trying to remove the active source has no effect and will result in a no-op.
Has no effect if there is no active playback session or if index is < 0 or index is size of sources.