I ripped a whole bunch of movies using DVD FAB. The profile in the app was for Apple TV. These movies worked just fine as long as the IOS version was 4.2.1 or below. Once I upgraded to 4.3.x, some of the videos now have no sound. Obviously something has changed, but what was it? Some CODEC compatibility? And then the last question, what do I do with all these videos? Do I have to rip them again? Convert them? Any thoughts would be most appreciated.