Changes

== Controlling and Monitoring Playback ==

Once an AVAudioPlayer instance has been created the playback of audio may be controlled and monitored programmatically via the methods and properties of the instance. For example, the self explanatory play, pause and stop methods may be used to control playback. Similarly, the volume property may be used to adjust the volume level of the audio playback whilst the playing property may be accessed to identify whether or not the AVAudioPlayer object is currently playing audio.