When I first got my iPad, I could open iPod, pandora, and SiriusXM and open the browser and the music would keep playing. Today, when I hit the menu button, the music stops with the app. Yesterday I bought the external display dongle to hook up to my TV, that's the only thing I can think that has changed. It's really a problem, the sound stops when the display sleeps, so I have to wake it up every minute. Does anyone know how to fix this?