Home sharing problem: I have never set up home sharing but I feel I understand it. I recently (last 2 months or so) deauthorized, first time ever, all computers with my iTunes account. I am trying to set up home sharing but get iTunes says "You can't".

Home sharing problem: I have never set up home sharing but I feel I the concept and how it works. I recently (last 2 months or so) deauthorized, first time ever, all computers with my iTunes account. I have 3 computers authorized. I am trying to set up home sharing but get iTunes says:

"Home Sharing could not be activated because this computer is not authorized for the Apple Id "#########@###.com". Would you like to authorize now?" I click "authorize" and get the next error " You cannont authorize more than 5 computers. You have already authorized 5 computers with this Apple ID. To authorize this computer you must first deauthorize one of the other computers."

Can someone help or shed more light on my problem?

Thanks,

Richard