//set up where the sounds is within the app bundle
pathToSound = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"best" ofType:@"wav"] isDirectory:NO];
Call to initialize / load the sound into memory for use
OSStatus error = AudioServicesCreateSystemSoundID((CFURLRef)pathToS ound, &theSound);
//play the sound
AudioServicesPlaySystemSound (theSound);