Yes, the shuffle is only for music. The difference between the Nano and the Classic are the screen size and the amount of music, movies, pictures and other information they hold. If you want to watch movies on your iPod, I would go with the Classic, the screen size of the Nano is way too small to watch on. Also, if you have a lot of stuff you want to have at your fingertips, the Classic would be a better choice. The Nano only holds up to 16GB of your stuff, while the Classic holds 120GB. It really depends on how much stuff you want to put on it. And the Classic is only $100 more for 112GB more space.