NSNotification Received But Method Is Not Called

Question

I am posting notification from UIViewController object to UIView object. Notification is called but its method "playSound" is not called.

Below is my code and Thanks in Advance :

@interface SettingsViewController : UIViewController <MFMailComposeViewControllerDelegate>
{
    MFMailComposeViewController *mailComposer;

}

- (IBAction)btnSoundClicked:(id)sender {
    if(self.btnSound.on)
    {
        NSLog(@"Swith On");
        [[NSNotificationCenter defaultCenter] postNotificationName:@"soundStatus" object:self.btnSound];
    }
    else
    {
        NSLog(@"Switch Off");
    }
}





@interface IAPuzzleBoardView : UIView <AVAudioPlayerDelegate> {

}
- (void)movingThisTile:(CGPoint)tilePoint {

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(playSound:)
                                             name:@"soundStatus"
                                           object:nil];
}
-(void) playSound : (NSNotification *) notification
{
    if ([[notification name] isEqualToString:@"soundStatus"])
    {
        NSString *path = [[NSBundle mainBundle] pathForResource:@"move" ofType:@"wav"];
        theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
        theAudio.delegate = self;
        [theAudio play];
    }
}