SystemSoundID topClick;

NSBundle* bundle = [NSBundle mainBundle];
NSString *topClickFile = [bundle pathForResource:@"top_click" ofType:@"aiff"];

AudioServicesPlaySystemSound(topClick);

NSString *graffitiSprayFile = [bundle pathForResource:@"sound_effect" ofType:@"aiff"];
AVAudioPlayer* sprayAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:graffitiSprayFile] error:NULL];
sprayAudio.delegate = self;
[sprayAudio prepareToPlay];
[sprayAudio setNumberOfLoops:999];