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copied!<p>You're setting <code>songIsCurrentlyPaused</code> to <code>NO</code> at the beginning of <code>play:</code></p> <p>Try commenting it out:</p> <pre><code>- (IBAction)play:(id)sender { //songIsCurrentlyPaused = NO; if(songIsCurrentlyPaused==YES){ [self.background play]; } else { playQueue = dispatch_queue_create("volume_change", NULL); dispatch_async(playQueue, ^{ NSString *filePath = [[NSBundle mainBundle]pathForResource:@"some_song" ofType:@"mp3"]; NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:filePath]; self.background = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:nil]; self.background.delegate = self; [self.background setNumberOfLoops:1]; [self.background setVolume:0.5]; [self.background play]; }); [trackNameLabel setText:@"Currently playing :\n some_song"]; self.timer = [NSTimer scheduledTimerWithTimeInterval:0.25 target:self selector:@selector(updateProgressBar) userInfo:nil repeats:YES]; } } - (IBAction)pause:(id)sender { songIsCurrentlyPaused = YES; [self.background pause]; [trackNameLabel setText:@"Currently playing : some_song (paused)"]; [self.progressBar setProgress:self.background.currentTime/self.background.duration animated:YES]; } </code></pre> <p>If you want to get rid of that initial pause you're gonna have to completely reorganize your player setup. Initialize it before user can hit play button and also call:</p> <pre><code>[self.background prepareToPlay]; </code></pre> <p>which will preload the song. Also move <code>songIsCurrentlyPaused = NO;</code> to some earlier place in code.</p> <p>EDIT:</p> <p>To get rid of initial delay you should move your initializing code to somewhere like <code>loadView</code> or <code>viweDidLoad</code>.</p> <pre><code> //initialization code NSString *filePath = [[NSBundle mainBundle]pathForResource:@"some_song" ofType:@"mp3"]; NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:filePath]; self.background = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:nil]; self.background.delegate = self; [self.background setNumberOfLoops:1]; [self.background setVolume:0.5]; [self.background prepareToPlay]; </code></pre> <p>Now this may cause a lag in UI display so you might wan't to consider preloading data in background thread.</p> <p>Your <code>IBAction</code> methods should then be modified:</p> <pre><code>- (IBAction)play:(id)sender { if (songIsCurrentlyPaused==YES) { [self.background play]; } else { playQueue = dispatch_queue_create("volume_change", NULL); dispatch_async(playQueue, ^{ [self.background setCurrentTime: 0.0]; [self.background play]; }); [self.progressBar setProgress:0.0 animated:YES]; [trackNameLabel setText:@"Currently playing :\n some_song"]; self.timer = [NSTimer scheduledTimerWithTimeInterval:0.25 target:self selector:@selector(updateProgressBar) userInfo:nil repeats:YES]; } songIsCurrentlyPaused = NO; } - (IBAction)pause:(id)sender { songIsCurrentlyPaused = YES; [self.background pause]; [trackNameLabel setText:@"Currently playing : some_song (paused)"]; [self.progressBar setProgress:self.background.currentTime/self.background.duration animated:YES]; } </code></pre>

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