My iPad sound is not working on anything but my Music app?
(I am referring to an iPad Mini when I say iPad) Just this morning, my iPad sound was working fine. I was watching a YouTube video on the app, and when I transferred to another video, the sound stopped working. I checked if mute was on or off in the Multi-Tasking bar (my Switch is set for Lock Rotation), and I turned Mute off even though it had been working before. I then checked my Music app to see if that was working, which it was. I listened to Music for a while and surfed the internet as I was bored. I then tried to play some games (Subway Surfers, Jetpack Joyride, Temple Run, etc.) and the sound on them wasn't working either. After that, I then checked back up on YouTube as I wanted to catch up on Glee and it still wasn't working. Could I please have some help as I also need to do some work and part of it is based on a YouTube video. I cannot do the work on a computer as I don't have one, and my local library is shut on Sundays. Thank you in advance.
iPad, iOS 6.1.3