Maybe a small update on possible k3b limitations is in place: Some days ago, I made a DVD of jpg's, about 2GB. k3b clearly got confused, for some reason, and gave up repeatedly, giving different reasons. The fix? Separating the image creation and burning process, using genisoimage to make the iso image first. No problem whatsoever for k3b afterwards, when it just had to chew along on a prepared image