I received an update for DiscWelder Bronze today from Minnetonka. It freakin' works! I was very disappointed with the initial version's support of DVD drives, but this version fixed the problems and is no longer making coasters of DVDs on me. It still requires separate files for each track, and despite claiming to write gapless tracks, it won't do it, but at least if you want to make DVD-A discs now you can.
Wayne