ITunes says it can play music bought on 5 different computers. Does it matter how I transfer the music? Would it still ask for my iTunes account password whether I transfer the music on a CD or on a USB hard drive key? Separately, if I use my .mac account as my iTunes account, can I use a different password for my iTunes than I do for my regular .mac log in? Thanks! P.S. Sorry if this has been answered already, I have tried to look it up but can't find an answer.