Custom Segue doesn't Play Sound

I made a custom segue and I want it to play sound when changing views. Unfortunately, it doesn't. Method playSound works fine when I use it in View Controller. But i don't want to export it in every View Controller i need. How can i improve my code and why segue doesn't want to play sound?

#import "CustomSegue.h"
@import AVFoundation;

@interface CustomSegue()
@property (nonatomic, strong) AVAudioPlayer *player;
@end

@implementation CustomSegue
@synthesize player;
- (void) perform
{
    UIViewController *src = (UIViewController *) self.sourceViewController;
    UIViewController *dst = (UIViewController *) self.destinationViewController;

    [UIView transitionWithView:src.navigationController.view duration:0.5
                       options:UIViewAnimationOptionTransitionCrossDissolve
                    animations:^{
                        [src.navigationController pushViewController:dst animated:NO];
                    }
                    completion:NULL];
    [self playSound];
}

- (void) playSound
{
    int r = arc4random_uniform(7) + 1;

    NSURL *soundUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%i", r] ofType:@"caf"]];
    self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundUrl error:nil];

    [self.player prepareToPlay];
    [self.player play];
}