iTunes Authorization problems

Try all three steps in this article
http://docs.info.apple.com/article.html?artnum=306424

I AM HAVING THE SAME PROBLEM. iTunes continually asks me to AUTHORIZE songs that I've already purchased...then displays "Authorization Successful" but refuses to play the song - it simply asks me to AUTHORIZE AGAIN!!

This is, for all intents and purposes, robbery. I have payed for songs that will not play. I also think its interesting that these questions have remained unresolved (and in many cases even unanswered)for almost a month now. WILL SOMEBODY PLEASE GET ON THAT??

*I AM HAVING THE SAME PROBLEM TOO!!!*

In my case, it only happened on certain songs, but those songs won't play no matter what I do - even when downloaded again. This is really frustrating. I did notice that the info on the songs that play have a "FairPlay Version:" field and the songs that don't play do not have this field. Weird!

I don't think I will make any more purchases from Apple until this issue is resolved.

I'm having this same problem. Started happening two or three months ago. Every time I log into iTunes, I have to reauthorize my account in order to play any songs I purchased from iTunes.

What gives?

I am having this problem, too. Transferred my library to a new PC (with Vista this time instead of XP). MANY of my purchased songs play (and transfer to the iPod), but 100 of them do not! These were all purchased on iTunes. ANYBODY????

I found the answer to my problem. I had purchased music with two different accounts in the past. One with Apple and one with AOL. Once I plugged in my AOL account name and CURRENT AOL password (not the one I'd used in the past), all of my unplayable "not authorized" music came back.

Having the same issue as above. Tried deauthorizing and reauthorizing but it didn't work. I only have two authorized machines and one account and they all play fine on my other machine but not on my sync machine.

Does anyone from Apple actually look at these forums?

Just wanna say...me too. This thing just started almost over night for me. 2 days ago all was fine. Now I can´t play any of my files and I can´t sync to my ipod.

Very frustrating...

Same problem here, started recently. If I delete the "sc" folder as mentioned in http://docs.info.apple.com/article.html?artnum=306424, I can access (play or sync) purchased items. Then if I close iTunes, when I reopen it I "lose" the authorization and have to go through the whole process again (deauthorize, delete the sc folder, reauthorize) in order to access purchased items.