I downloaded a song from iTunes and it won't play. Whats up? I tried everything on iTunes' troubleshooting list and everything on that list was useless because all of the questions were like, for example, "you have too many computers authorized," whereas I just have one computer authorized for iTunes. All my other songs play and I paid for this song so I want my money's worth. Once you do that you need to authorize each computer later. Then you'll be able to play the song. Good luck :)