I'm trying to play an audio file on iPhone and iPod touch with **AVAudioPlayer**. The code works fine in **iPhone** and **iPod touch 4G**, I can hear the music. But when I test it on **iPod touch 2G**, **iPod touch 3G**, I can't hear anything.

Below is the code I use to play audio file:

```
NSString *zeroAudioPath = [[NSBundle mainBundle] pathForResource:@"TimerBell"
                                                          ofType:@"aif"];
NSURL *file = [[NSURL alloc] initFileURLWithPath:zeroAudioPath];
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:file
                                                                    error:nil];
[file release];

self.zeroAudioPlayer = audioPlayer;
zeroAudioPlayer.delegate = self;
[audioPlayer release];
[zeroAudioPlayer prepareToPlay];
[zeroAudioPlayer play];

```