how do u reset a ipod shuffle
how do u reset a ipod shuffle 2nd generation
Resetting the shuffle is simply turning it on and off
http://support.apple.com/kb/HT1655
If you want to Restore the shuffle, connect it and select it in iTunes. On the iPod's Settings screen, click on the Restore button. This will erase the shuffle, reinstall its software, and set it to default settings.