On the new On Fire DVD (the PAL version): I decided to listen to the DVD with headphones on for any discrepancies the home theatre didn't pick up and disperse on the speakers. I found it: it's on the second disc, on the Japan concert, the last song: Teo Torriate. There's a low-pitched hum that begins with the track and goes throughout the song, like a monitor's been left on or Brian's guitar was doing a bit of feedback since he was playing the piano with the Red Special strapped to him and ready for the guitar part. I wonder if the hum could have been edited out or if the tape was too old to do anything with the audio? Anyone hear anything similar? (I've asked a few US friends to try the same experiment with theirs.)