I have 5 computers authorized to play my music...and I want to play it on another computer (i.e. #6). I don't have access right now to the other computers...and apparently there's nothing I can do. Or am I wrong? As far as I know, there is no way to de-authorize all computers from my iTunes account. THERE SHOULD BE! Why can't I have control over the computers that are authorized to play my music via my iTunes music store account? C'mon apple!!!!