NSString *fileName = [[NSBundle mainBundle] pathForResource:@"Alarm" ofType:@"caf"];
    NSURL *url = [[NSURL alloc] initFileURLWithPath:fileName];
    NSLog(@"Test: %@ ", url);

    AVAudioPlayer *audioFile = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
    audioFile.delegate = self;
    audioFile.volume = 1;

    [audioFile play];

// Build URL to the sound file we are going to play
NSURL *sound_file = [[NSURL alloc] initFileURLWithPath: [[NSBundle mainBundle] pathForResource:sound_file_name ofType:@"mp3" inDirectory:directory]];

// Play it
audio_player = [[AVAudioPlayer alloc] initWithContentsOfURL:sound_file error:nil];
audio_player.delegate = self;
[audio_player play];
[sound_file release];