Prepares a music player to play.
- iOS 5.0+
- macOS 10.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
The music player to prepare to play.
A result code
Call this function in advance of playback to reduce a music player’s startup latency. If you call
Music without first calling this function, the player will call this function before beginning playback.