:
SystemSoundID soundID;
NSString *sound_string= [NSString stringWithFormat:@"%@%@", [[NSBundle mainBundle] resourcePath], @"/sound.aif"];
NSURL *sound_url= [NSURL fileURLWithPath:sound_string];
AudioServicesCreateSystemSoundID((CFURLRef)sound_url, &soundID);
AudioServicesPlayAlertSound(soundID);