Alternatively there's also an .avi version (700MB) torrent there too.
I've used subrip to extract the subtitles to a couple of formats, that you can download here
SRT, STL and SUB files created using OCR setting in SubRip. (80KB zip file)
SUP file extracted with VobEdit - not sure how useful this is as I've never found any software that can edit SUP files, but its a straight demux from the DVD. (1MB zip file)
As I've not reauthored the disc using these files, it's hard to know quite how accurate they are, although I imported just the stl file into DVD Maestro and the subtitles seemed to appear at the correct times.
The thing to bear in mind is they are timed to fit the controversial timecoded bootleg, which has several sections where the video repeats itselfs for several seconds. If you wanted to fit these to the official DVD they would get progressivley out of sync, so the subtitles would need nugding forward by a few seconds at key points (where the bootleg repeats).