Here's one for ya. My ipad 3 will play sound in certain videos but not others. It will not play sound in games or will not play any system sounds. Last night my son pulled up a video on facebook with his ipad 3'and played it with sound. Then I pulled the same vid up on my facebook and I had no sound. I downloaded a guitar app and found I get no sound. Same with Angrybirds. I go to Fox News videos and they play just fine, same with The Daily. I did a reset and it did not help. I did a full reset on Itunes and it did not help. Does anyone know what could be going on?