---
title: "MusicPlayerPreroll(_:)"
framework: audiotoolbox
role: symbol
role_heading: Function
path: "audiotoolbox/musicplayerpreroll(_:)"
---

# MusicPlayerPreroll(_:)

Prepares a music player to play.

## Declaration

```swift
func MusicPlayerPreroll(_ inPlayer: MusicPlayer) -> OSStatus
```

## Parameters

- `inPlayer`: The music player to prepare to play.

## Return Value

Return Value A result code

## Discussion

Discussion Call this function in advance of playback to reduce a music player’s startup latency. If you call MusicPlayerStart(_:) without first calling this function, the player will call this function before beginning playback.

## See Also

### Managing a Music Player

- [NewMusicPlayer(_:)](audiotoolbox/newmusicplayer(_:).md)
- [DisposeMusicPlayer(_:)](audiotoolbox/disposemusicplayer(_:).md)
- [MusicPlayerGetBeatsForHostTime(_:_:_:)](audiotoolbox/musicplayergetbeatsforhosttime(_:_:_:).md)
- [MusicPlayerGetHostTimeForBeats(_:_:_:)](audiotoolbox/musicplayergethosttimeforbeats(_:_:_:).md)
- [MusicPlayerGetPlayRateScalar(_:_:)](audiotoolbox/musicplayergetplayratescalar(_:_:).md)
- [MusicPlayerGetSequence(_:_:)](audiotoolbox/musicplayergetsequence(_:_:).md)
- [MusicPlayerGetTime(_:_:)](audiotoolbox/musicplayergettime(_:_:).md)
- [MusicPlayerIsPlaying(_:_:)](audiotoolbox/musicplayerisplaying(_:_:).md)
- [MusicPlayerSetPlayRateScalar(_:_:)](audiotoolbox/musicplayersetplayratescalar(_:_:).md)
- [MusicPlayerSetSequence(_:_:)](audiotoolbox/musicplayersetsequence(_:_:).md)
- [MusicPlayerSetTime(_:_:)](audiotoolbox/musicplayersettime(_:_:).md)
- [MusicPlayerStart(_:)](audiotoolbox/musicplayerstart(_:).md)
- [MusicPlayerStop(_:)](audiotoolbox/musicplayerstop(_:).md)
- [MusicPlayer](audiotoolbox/musicplayer.md)
- [MusicTimeStamp](audiotoolbox/musictimestamp.md)