MPMoviePlayerController playback problem

I'm having trouble with playing audio stream using MPMoviePlayerController in the background. On the foreground it's playing the audio just fine, but whe开发者_如何学运维n the application goes to the background, sound disappears and the time keeps going. I have initialized the AVAudioSession with AVAudioSessionCategoryPlayback and have put the required background modes to audio in info.plist file. Also I have set player.useApplicationAudioSession = YES;. What could be the possible problem here? Thanks in advance :)

This ios background link indicates that the useApplicationAudioSession property value should be set to NO for iOS 3.2 and newer. (I have an app that does this and it works fine in background mode.