I have hundreds of songs tied to and old Apple ID. No longer have the computers... I have a new Apple ID but many of the songs wouldnt authorize and ideas ?
You will need to authorise that old account on that computer's iTunes - all downloads from iTunes are tied to the account that downloaded it.
If you can't remember it's password then see if you can get it reset via this page : http://appleid.apple.com, then 'reset your password'
Retrieving data ...