I'm still trying to sort out exactly which of the bonus tracks are original 2ch mixes, which ones are remixes, and which ones have both stereo and surround mixes. There's a lot of bonus stuff here!
As for the main content, I was mostly unfamiliar with it except for the title track and 'Salamander', but it's gone way up in my estimation thanks to SW's work here. I'm also enjoying the original mix (the flat transfer). I'm especially taken by 'From a Dead Beat to an Old Greaser', one of IA's more poignant lyrics.
If you're ripping audio out of the DVD's, I found the following:
DVD 1 has these playlists
1. The TV Special (video and 24/48 lossy audio in stereo and 5.1)
2. The TV Special (audio only 96/24 LPCM stereo and DTS 96/24 5.1) (this is the one to rip if you're doing so)
3. 5 original album tracks remixed to stereo and 5.1 by Steven Wilson (96/24 LPCM stereo and DTS 96/24 5.1)
(You can tell the difference between the A/V and Audio only playlists because the A/V playlist has an extra track that's just the credits at the end of the TV broadcast - A/V playlist is about 43mins and the audio only playlist is 41 and a bit minutes.)
DVD 2 has these playlists
1. Flat transfer of the 1976 stereo mix (96/24 LPCM)
2. Flat transfer of the 1976 quad mix (DTS 96/24 and Dolby Digital 4.0)
3. Associated Recordings 2015 SW remixes in stereo (96/24 LPCM) and 5.1 (DTS 96/24) (4 Tracks)
4. Associated Recordings 1976 Original Mixes (96/24 LPCM) (6 Tracks)
(You can tell the difference between the 2015 SW remix playlist and the 1976 vintage mixes playlist because the vintage mixes are stereo only and the remixes have stereo and 5.1 audio streams.)
I think all the playlists that have DTS 96/24 5.1 also have Dolby Digital 5.1 for compatibility as well but I've omitted them from my descriptions.
You can find the tracklisting for all the bonus tracks in the
discogs entry for this title, just scroll down to the DVD portion.
Edited to add: it's going to take me about 2 months to listen to everything on here, so no review as of yet, but I wish more bands would do releases as extensive as the Jethro Tull series.