I'm using lime wire and why won't the mp3's show up on the ipod nano. I see them on the ipod folder but the ipod wont see them when trying to listen. Is mp3 the right format?
No that's not wrong. It should still work. Do you have your iPod set to "Automatically Update All Songs and Playlists"?
When you plug in your iPod, in the source menu on the left, right click on your iPod and go to settings. Then, you should be able to change that setting in there. This should put all your songs onto your iPod automatically each time you plug it into your computer.