title: iPhone AVAudioPlayer stopping background music
body: <p>So I've just noticed that on my iPod Touch, when my app triggers a short wav file to play using AVAudioPlayer, the music gets paused. Is this normal? </p>
  
  <p>I can't find any reference to this, and it seems like it would be noted somewhere. Is there a way to keep the music going while I play my sounds?</p>