gistfile1.txt

#import <AVFoundation/AVFoundation.h>

// Initialize the music player
    rickroll = [[AVAudioPlayer alloc]
                        initWithContentsOfURL:[[NSBundle mainBundle]
                                               URLForResource:@"Rickroll"
                                               withExtension:@"mp3"]
                        error:nil];

// Play music for 300ms
[self performSelectorInBackground:@selector(playAudio) withObject:nil];

// Code to do stuff - NSAutoreleasePool is necessary because it's in a background thread
- (void)playAudio {
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    if ([rickroll isPlaying])
        return;
    [rickroll play];
    [NSThread sleepForTimeInterval:0.3];
    [rickroll pause];
    [pool release];
}