Returns the host time that will be (or was) played at the specified beat.
- iOS 9.0+
- macOS 10.11+
- Mac Catalyst 13.0+
- tvOS 9.0+
This call is only valid if the player is playing and will return
0 with an error if the player is not playing or if the starting position of the player (its starting beat) was after the specified beat. The method uses the sequence's tempo map to translate a beat time from the starting time and beat of the player.