Sound not playing, I don't see what I am doing wrong.

#import "JMAViewController.h"
#import "JMACrystalBall.h"
#import <AudioToolbox/AudioToolbox.h>

@interface JMAViewController ()
@end

@implementation JMAViewController {
    SystemSoundID soundEffect;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    // Get the path to the mp3
    NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"crystal_ball" ofType:@"mp3"];
    NSURL *soundUrl = [NSURL fileURLWithPath:soundPath];
    AudioServicesCreateSystemSoundID(CFBridgingRetain(soundUrl), &soundEffect);

     // We are going to do this in main.storyboard, this is just for an example.
//    UIImage *backgroundImage = [UIImage imageNamed:@"background"];
//    UIImageView *imageView = [[UIImageView alloc] initWithImage:backgroundImage];
//    [self.view insertSubview:imageView atIndex:0];

    self.crystalBall = [[JMACrystalBall alloc] init];
    self.backgroundImageView.animationImages = [[NSArray alloc] initWithObjects:
                                                [UIImage imageNamed:@"CB00001"],
                                                [UIImage imageNamed:@"CB00003"],
                                                [UIImage imageNamed:@"CB00004"],
                                                [UIImage imageNamed:@"CB00005"],
                                                [UIImage imageNamed:@"CB00006"],
                                                [UIImage imageNamed:@"CB00007"],
                                                [UIImage imageNamed:@"CB00008"],
                                                [UIImage imageNamed:@"CB00009"],
                                                [UIImage imageNamed:@"CB00010"],
                                                [UIImage imageNamed:@"CB00011"],
                                                [UIImage imageNamed:@"CB00012"],
                                                [UIImage imageNamed:@"CB00013"],
                                                [UIImage imageNamed:@"CB00014"],
                                                [UIImage imageNamed:@"CB00015"],
                                                [UIImage imageNamed:@"CB00016"],
                                                [UIImage imageNamed:@"CB00017"],
                                                [UIImage imageNamed:@"CB00018"],
                                                [UIImage imageNamed:@"CB00019"],
                                                [UIImage imageNamed:@"CB00020"],
                                                [UIImage imageNamed:@"CB00021"],
                                                [UIImage imageNamed:@"CB00022"],
                                                [UIImage imageNamed:@"CB00023"],
                                                [UIImage imageNamed:@"CB00024"],
                                                [UIImage imageNamed:@"CB00025"],
                                                [UIImage imageNamed:@"CB00026"],
                                                [UIImage imageNamed:@"CB00027"],
                                                [UIImage imageNamed:@"CB00028"],
                                                [UIImage imageNamed:@"CB00029"],
                                                [UIImage imageNamed:@"CB00030"],
                                                [UIImage imageNamed:@"CB00031"],
                                                [UIImage imageNamed:@"CB00032"],
                                                [UIImage imageNamed:@"CB00033"],
                                                [UIImage imageNamed:@"CB00034"],
                                                [UIImage imageNamed:@"CB00035"],
                                                [UIImage imageNamed:@"CB00036"],
                                                [UIImage imageNamed:@"CB00037"],
                                                [UIImage imageNamed:@"CB00038"],
                                                [UIImage imageNamed:@"CB00039"],
                                                [UIImage imageNamed:@"CB00040"],
                                                [UIImage imageNamed:@"CB00041"],
                                                [UIImage imageNamed:@"CB00042"],
                                                [UIImage imageNamed:@"CB00043"],
                                                [UIImage imageNamed:@"CB00044"],
                                                [UIImage imageNamed:@"CB00045"],
                                                [UIImage imageNamed:@"CB00046"],
                                                [UIImage imageNamed:@"CB00047"],
                                                [UIImage imageNamed:@"CB00048"],
                                                [UIImage imageNamed:@"CB00049"],
                                                [UIImage imageNamed:@"CB00050"],
                                                [UIImage imageNamed:@"CB00051"],
                                                [UIImage imageNamed:@"CB00052"],
                                                [UIImage imageNamed:@"CB00053"],
                                                [UIImage imageNamed:@"CB00054"],
                                                [UIImage imageNamed:@"CB00055"],
                                                [UIImage imageNamed:@"CB00056"],
                                                [UIImage imageNamed:@"CB00057"],
                                                [UIImage imageNamed:@"CB00058"],
                                                [UIImage imageNamed:@"CB00059"],
                                                [UIImage imageNamed:@"CB00060"],nil];
    self.backgroundImageView.animationDuration = 1.0f;
    self.backgroundImageView.animationRepeatCount = 1;

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


#pragma mark - IBActions

- (IBAction)predictButton:(id)sender {
    [self makePrediction];
}

#pragma mark - motion events

- (void) motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event{
    NSLog(@"began\n");
    [self hideLabelText];
    self.predictionLabel.text = nil;
}

- (void) motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event{
    if(motion == UIEventSubtypeMotionShake){
        NSLog(@"ended\n");
        [self makePrediction];
    }
}

- (void) motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event{
    NSLog(@"cancelled\n");
}

#pragma mark - touch events

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [self hideLabelText];
    NSLog(@"began\n");
}

- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    NSLog(@"ended\n");
    [self makePrediction];
}

- (void) touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
    NSLog(@"cancelled\n");
}

#pragma mark - Prediction

- (void) makePrediction
{
    AudioServicesPlaySystemSound(soundEffect);
    [self.backgroundImageView startAnimating];
    self.predictionLabel.text = [self.crystalBall randomPrediction];
    [UIView animateWithDuration: 7.0 animations: ^{
        self.predictionLabel.alpha = 1.0f;
    }];
}

- (void) hideLabelText
{
    self.predictionLabel.alpha = 0.0f;
}
@end