Alright, I have 5 authorized computers already (some more than once after reformats). So in order to authorize my new MacBook in iTunes to play purchased items I used the de authorize All Accounts option from account options in iTunes, after doing so although it said 0 computers authorized, I could still play purchased music from all of my previously authorized machines (which are now supposed to be deauth'd) what should I do!?! I just don't want all of my purchased items to go down the drain somehow...