title: iPhone: How to play a sound at a particular time?
body: <p>I have written the following code: </p>
  
  <pre><code>-(void)runTimer
  {
      myTicker=[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(showActivity) userInfo:nil repeats:YES];
      myTicker = [NSTimer scheduledTimerWithTimeInterval:60.00 target:self selector:@selector(vibrate) userInfo:nil repeats:YES];
  }
  
  -(void)showActivity
  {
      NSDateFormatter *formatter =
                    [[[NSDateFormatter alloc] init] autorelease];
              NSDate *date = [NSDate date];
          [formatter setTimeStyle:NSDateFormatterMediumStyle];
           [timerLabel setText:[formatter stringFromDate:date]];
  }
  -(void) vibrate{
  AudioServicesPlaySystemSound (kSystemSoundID_Vibrate);
  
  }
  </code></pre>
  
  <p>I want to play an audio file instead of vibrating the iPhone. Is that possible?</p>