Q: I used to live on a college campus and authorized 5 computers so they could listen to some of my music. Now I have moved away and I want to de-authorize those computers so that I can choose 5 new ones. How does one do this?
A: You will have to go back to the campus and find each of the computers, then manually de-authorize them – or have someone else do this for you. You can try contacting the iTunes Music Store customer support and see if they’ll reset your account, if you cannot do this manually.