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# MusicPlayerSetPlayRateScalar(_:_:)

Sets a playback rate multiplier for a music player.

```
func MusicPlayerSetPlayRateScalar(_ inPlayer: MusicPlayer, _ inScaleRate: Float64) -> OSStatus
```

## Parameters

`inPlayer`

The music player that you want to set a playback rate multiplier on.

`inScaleRate`

The playback rate multiplier to apply to the music player. For example, setting this parameter to a value of 2 doubles the playback rate. Must be greater than 0.

## Return Value

A result code

## Discussion

A music player’s default playback rate multiplier is 1.0.

---

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