"This computer is already authorized" but still won't play

Have you had a look at this article? iTunes repeatedly prompts to authorize computer to play iTunes Store purchases

I am having the same problem. Ever since I upgraded to Snow Leopard I have not been able to sync anything that need authorization to my iphone. I too get a constant loop of asking for authorization and replies that say this computer is already authorized.

I even went and authorized 5 computers on my iTunes account and then used the deauthorize all computers. That cleared out all computers that were on my account; however it did not work. HELP!!!

I am having same problem - I only have 3 authorized computers. The old computer it keeps wanting to loop back to (every time I try to play a song and sign in with the 'newer' computer and password that it seems to recognize as legitimate) is from years ago and I no longer no the password . . . worse still I cant have it email me the password b/c that email address is also long gone.

I tried the uninstall the itunes and reinstall it approach - no luck.

If someone can pls advise on this Id be most grateful - I'm a real imbecile on the computer but really cant seem to figure this one out . . .

I tried everything on that page and I'm still having the same problem. I would HOPE the kind folks at Apple would resolve this problem soon, as I've seen COUNTLESS message board posts dedicated to this very problem.

Yep - I too am stuck in an endless loop and tech support, online support from Apple has been NO help at all. Are you listening Apple?!

This might help someone here:

http://support.apple.com/kb/TS1277

Tried all of it. Still not working. Any other ideas?

I am having the same problem. I have had snow leopard for a while now and no problems til i upgraded to the current version of itunes. I am not allowed to use over 30 songs that I bought under my old id and that was over a year ago that I changed my id to my current with no problems, now with this upgraded itunes its all messed up

there are so many people with this problem and the posts go back years!!! why wont apple sort it out??

I was having the same problem - and tried everything suggested above and by an apple rep. There were approximately 70 songs in my library that would not play despite the message "the computer is already authorized". By chance I tried to authorize another song. The other song I tried was bought from another account - I have two; one from the US (I lived there when I opened my account) and one from Canada where I currently live. After I authorized my American account ALL of my songs played on my computer.

Not sure if it's a multiple account issue or a geographic/account issue. Regardless I hope it helps.

I had this problem and tried every possible solution I could find on the internet, but nothing worked. I ended up uninstalling iTunes altogether (following the instructions found at http://support.apple.com/kb/ht1224 - though I stopped after step 13), reinstalling the same version of iTunes, and now everything seems back to normal. Hope that helps.