You can package the audio data in an *aiff*, *wav*, or *caf* file. Then, in Xcode, add the sound file to your project as a nonlocalized resource of the application bundle. You may use the *afconvert* tool to convert sounds.
```javascript
/**
* Plays the sound if the notification pop's up
* Plays the `beep.mp3` which has to be located in the root folder of the project