I'd noticed a while ago that my iPod had a few songs on it that it refused to play. When the songs popped up on the playlist, it would just instantly skip past them. So yesterday and today during my breaks at work, I resorted to going through all 2,200 or so songs and marking all the ones that wouldn't play. Turned out to be 22 songs that were glitching, and reloading them onto the iPod seems (knock on wood) to have fixed it.
Still haven't done tomorrow's handout worksheet. But it's not due until we go in around 6 PM. I'll have time to do it either at work or afterward. Right now I just need sleep.