The latest iPod software update seems to have screwed over my iPod. While it works fine whilst connected to the computer, it refuses to admit that it has any music on it when it's by itself. I've been thinking about getting a iPod Touch for a while now, and this may be the tipping point. All I need to do now is think of a motto from Dinosaur Comics to engrave on it.
Turns out there's nothing wrong with the iPod. I just hadn't updated the iTunes software. You can all return from the edge of your seat.