Yes, I love to do stuff like that. I figure if I have to be stuck in an airport, I can at least finally learn how to use audiosnap!
Karl's video is brilliant on QuickTime, where you can select chapters. But I like to throw stuff on my phone or sometimes watch it via Plex on my tv. So, even though I can reduce the file. I'm much too lazy to try to slice it into the respective chapters and that's the problem.
However, I might be a minority of one on this. I have a couple of SWA videos and they are always one big file. I have the Groove3 X1 tutorial and I had an access pass there for a while--and I like G3 approach of one file per chapter. Seems more efficient; less fast-forwarding.