i run a recently purchased g5 with 10.3. over the last year i have purchased music from the itunes store on three different macs. i have just moved my library to the new machine but not able to play the "purchased music". i have de-authorized two of the previous computers and used the disk utility to reset the authorizations on the new machine. yet still a no go. when i try to play a song now the software requires me to sign in which seems to work fine (ie: no message saying to many computers anymore) yet when i click on the song again to play it, the same sign in window pops up. much help would be appreciated.