I've been playing videos for two days, and now any time I try to play one, it won't play at all. It'll just show where it left off for about two seconds (still screen, no sound), then I see the little loading wheel, and then it just sits there. Shows zero minutes of zero minutes. Any button press (play, forward, backward) does nothing. This happens on every video. ??? Weirdly enough, if I use air video to stream them in, they all work. Any ideas?