 <p>One solution can be <code>NSNotifications</code>. Post a notification when mute button is tapped and add observer on each of the view where you want play/mute sounds.</p> <p>See this <a href="http://iphonebyradix.blogspot.com/2011/07/nsnotificationcenter-tutorial.html" rel="nofollow">NSNotificationCenter Tutorial</a> for how to post and add observe for <code>NSNotification</code></p>