How do I alisin songs from an iPod Nano?

You can't do it directly on your iPod, you have to do it on the computer your iPod is synced to. If you want to completely alisin the song then alisin it off your iTunes and re-sync and it will be off of your iPod as well; if you want to keep the song on your computer and just remove the song from your iPod then uncheck the box susunod to the song on your iTunes and re-sync.