I cannot even preview songs in the music store, A window pops up asking me to authorize my laptop, which I then do, then it says my computer is already authorized that I'm using 3 out of my 5 authorizations. I use to use my deaktop to sync but I'm going to college so transfered my library to my laptop. It worked fine for months until this is happening. Not all my sstore bought tracks are unplayable, but a few asks for authorization but still doesn't play once authorized. Help anyone?