... functionality within your application, so that you can send this information by communicating with another iOS device, and have this information received wirelessly and stored within the database ... AVEncoderAudioQualityKey, [NSNumber numberWithInt:16], AVEncoderBitRateKey, [NSNumber numberWithInt:2], AVNumberOfChannelsKey, [NSNumber numberWithFloat:44100.0], AVSampleRateKey, nil]; ... Recording and Playback[ 88 ]3. We then set the value of the mailComposeDelegate controller to self so that our controller receives the mailComposeController:didFinishWithResult:error: message...