Help! I just noticed that hundreds of my songs in my iTunes are suddenly unplayable. I have no idea how long theyve been this way, as I havent been paying too much attention recently to iTunes. Ive just been playing songs in shuffle mode for a while. When I click on these songs, I get a notice that says "This computer is not authorized to play [song title]. Would you like to Authorize it?" These are all songs I bought/downloaded on iTunes, so I don't understand what the problem is. And when I enter my account ID and password to try and authorize them again, nothing happens. (It says my computer is authorized, yet the songs remain unplayable). I've been going through my library to see which songs are like this, and Im only halfway through so far. Im guessing around 500 of them (out of over 3500) are like this. I noticed they were ALL songs I bought PRIOR to March, 2004. Now the only thing I can think of that MIGHT be the cause of this is something that happened recently I have ALWAYS handled/bought all my music on ONE computer only my G5 desktop. With iTunes 7 installed, I noticed you could now transfer purchased music from your iPod to other computers, so I tried to do that with my G4 laptop. I was only able to transfer over about 10% of my iPod for some reason. And then, when I tried to play the songs, it gave me a similar message of This computer is not authorized with an addition of Only 5 of your computers can be authorized to play purchased music at a time, or something like that. And in order to authorize my laptop, I would have to deauthorize one of my other computers. Well this confused me greatly, because I have NEVER had five computers with iTunes accounts. At the MOST I had 3 maybe the two computers I currently own, and a previous laptop that a friend now owned. I went to my friends computer and tried to deauthorize that one just in case I somehow didnt erase all my account info like I thought I had (she rarely touches iTunes, and only occasionally plays the music thats already there), but it said it was never authorized in the first place. Ok so which computers were?!?! I was pretty confused/frustrated for a couple of days, until some searching on Apples site led me to their authorization page, where it explained I could deauthorize ALL my computers at once (something you can only do once a year, it seems). So I did that, thinking I could then just re-authorize my two current computers and my laptop would FIINALLY be able to play that music. Well I did it, and it seemed to work. I tested a few songs on both computers, and all seemed ok . Until yesterday, when I realized a huge chunk of my library thats suddenly unplayable!! What gives? Anyone have any idea what happened here? I really dont want to have to re-buy all of these songs. Any help is much appreciated Thanks.