also, I like to put set 1 in group 1, set 2 in group 2. that sort of thing. it's not really necessary, and I've burned many DVD-A discs from discwelder with the whole show in one group (discwelder bronze only allows you to burn one group). but I like to split them up if I can. My DVD player allows me to skip tracks, or to skip whole groups. So if I want to go right to Set 2, instead of skipping ahead to track 13 or whatever, I can skip straight to Group 2.