ATV not authorized to play this content ?????

I am running ATV on a wireless network via Time Capsule. The ATV set up was easy out of the box but when I went to play content on my iTunes account I kept getting the "ATV not authorized warning". Also the ATV would not play YouTube content. I called tech support and was on the line with a second level product specialist. We tried several options over 1.45 minutes. I was told that someone would get back to me with a solution in a few days. I decided not to wait and instead went to my local Apple store and exchanged the ATV for a new one just to see if in fact it was a hardware issue. The set up for the second ATV was as smooth as the first but again, that annoying message kept appearing.
Here is the solution that worked for me. I set up ATV and left it on the main menu. I went to iTunes on my mac and could see the ATV in the device menu. Everything seemed ok on that end. 1. Go to the store menu in iTunes and click "deauthorize". 2. After iTunes tells you that you have successfully "deauthorized" this computer, go ahead and select "authorize this computer" in the same menu pane. 3. Then go back to the ATV and unplug the power cord wait 30 seconds. 4. Plug the power cord back in and watch the ATV restart itself. 5. Go back to the iTunes acct on your pc or mac and when you click on the ATV in the device menu, go to the screen that allows you to set the sync options, im talking about the one that allows you to choose to sync music for instance, but manualy choose playlists not all content. 6. choose the manual function and just have it set up so that you are only syncing lets say a small playlist of songs nothing else. What im getting at is when I initially set up ATV on my iTunes acct it was defaulted to sync everything, Movies,Music, Photos etc. But for this trial attempt I just wanted to limit the sync to just a few songs so that I could quickly see if the ATV would infact allow me to play them. Also make sure in your iTunes playlist that you are syncinig , that all the songs are checked. When you go back to the ATV select Youtube and see if it loads the YouTube content, if that works, you are halfway there. Then select music from the ATV menu , then Mymusic on the right side of the menu and you should see you single playlist that you synced there on the screen, cover art etc. Now try to play a song, and it should work. It worked for me.
I hope this helps you all as I do think there is some glitch with the iTunes acct you allready have and the ATV allowing the authorization of all the content on that acct. I will send this to the Apple support team in order to help them naorrow down the problem. Hopefully it will help them trying to solve the problem so others will not have to deal with it.
good luck and feel free to email me if you want to chat about it more.

tom