title: Set AVAudioPlayer as input data source for AVAudioSession
body: <p>I am wondering if it is possible to specify an AVAudioPlayer as an input device for AVAudioSession. I want to play a sound through a VoIP application through the microphone for the other party to hear and I don't know how to go about this, if it is even possible.</p>
  
  <p>Any help is appreciated, the docs are vague and I know this is not kosher programming, thanks.</p>