dont worry it doesnt work ... tried it a million times with ipod touch
delete it from your library in itunes
unfortunatly there is no way to delete songs from the iPod touch itself to delete songs you need to do it through iTunes.
restore your ipod touch on itunes
Go on iTunes
You will be given the option to transfer your ipod's music/videos etc. to the blank library.
you need to sign in on your computer and then sync your ipod or iphone to your account
You have to do it from itunes
Well, You either make a new account or you can delete everything you've got, or, you can re-register your IPod. Hope this helps!
You can use itunes or delete it straight off the touch.
When restoring your Ipod Touch the data on itunes doesn NOT get deleted. :D
iTunes accounts are free anyways. Go to apple.com/itunes and download itunes, once installed it will give you the option to set up an account.