i am guessing you mean on the ipod touch/iphone go to settings then store and then you will see the option "sign out" then you will have the option to login.
hope this helps
if you have other...
its illegal under copywright laws only purchased items from itunes can be transfered if u use limewire or anyother music sharing network they dont transfer hope this helped
iTunes U is a place for anyone to download audio lectures in podcast form from a university. This is useful especially if someone is not in college yet would like to study college material. iTunes...