It looks like the main features are on Our Friendly Torrent Site (well, version 2 of Ep 4). The Extras are there as well, and those have been posted to usenet (and still available on at least a few usenet providers). The detailed information URL seems to be down, but the Internet Archive has a version:
https://web.archive.org/web/20150204114632/http://homepage.ntlworld.com:80/russdawson/gtf/dvd/OT/edit.html

One thing that I can’t find is version 1 of Ep 4. I don’t believe it’s on the regular torrent site, and as far as I can tell it’s never been uploaded to usenet. Any pointers? Or, if someone has it and can upload to the regular site, it would be much appreciated – thanks!