well,i can't be sure but maybe this disk was set up with DTS in mind because i listened in DD,pro-logic(2 different systems),stereo(2 different systems) all sounding like crap,and the tech. term may not be 'dropout' but that's what i associated it with but it seemed to happen when they moved around on stage and maybe someone was trying to pan the signals to make it sound like they moved around,and also the manager guy knew it sounded bad.
don't know,maybe when i get a chance to sit down and crank it up i'll hear it again(hope not),but just doing a casual listen at lower volume i couldn't pick up on it.
i'll update after the next 'jam session'