This is the error message I get now whenever I try to make a purchase using the music store. I can listen to the song previews just fine, I've quit and reopened the app, I've forced permissions on my iTunes Music folder to be what it should, I've attempted to purchase different songs (all respond the same way), I've unchecked the "connect to internet when needed" checkbox (somebody claimed it worked for them)--but no matter what, it's the same error each time. I used to be able to make purchases just fine. Any ideas?