Ok, I'm probably doin something realllly stupid now, but I have Muse's latest albume - Absolution, and there are a few tracks I'd like to join. Noteably, the first track is just 21 seconds of marching that fades into the first song. Sounds cool, but when you're listening to the AACs or MP3s there's the obvious break... So I erased what I already had, dug out the original CD and put it in. Then I went to the CD dialog in iTunes and selected tracks 1&2. Went to advanced, and the Join CD Tracks option is greyed out...! Tried selecting one track at a time, still grey... What am I doing wrong?!