Entering background on iOS4 to play audio

Question

The documentation is rather poorly written when talking about playing audio in the background. It gives the impression that all you have to do to continue playing the audio

Answer 1

The one part missing from the documentation is you need to set your audio session.

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

Add that and you'll be good to go.