Hmm, I got the 2.5 mkv from myspleen, and the md5sum is wrong, and it really doesn't play properly, to say the least. Loads of discontinuities.

(At first, I worried that it was just that vlc was scared of all the tracks, so made a -vc -copy ac copy with ffmpeg, with a -map 0:0 and -map 0:2 to just use the video and the stereo 35mm mix...)

The problem is, I can't see it on there right now, to get a replacement copy. At 18 gb, it also eats into my monthly quota when it's corrupt, so was hoping that the torrent client would just sort it out for me :D