The currently-playing media item, or the media item, within a queue, that you have designated to begin playback with.
- iOS 3.0+
- Media Player
To specify that playback should begin at a particular media item in the playback queue, set this property to that item while the music player is stopped or paused.
If no media item is playing or designated to play, this property’s value is
If you use the system music player and the user plays an item from another library using Home Sharing, the value of this property is