I've got a 2-disc version of it on CD that a brought a few years ago but I don't know what version it is. There was also a version of the stage show filmed about seven or eight years ago which Sky Movies Indie occasionally shows and that is very good.
This thread has inspired me to break out the previous CD release and stick it on.
I am sitting here listening to Track 3 "The Artilleryman and the Fighting Machine" at this moment. It reminds me of one of the things that I always think this version gets across better than pretty much any other media version. There is a really nice little riff for the fighting machines that underlines the fact that they are faster than seems possible for their size. Too often film versions give us quite sedate, ponderous Fighting Machines - but I always took from the book a sense of them being fast as well as big.
i've got the Liam Neeson one, it's pretty good, i've also got the original on CD as well as the remixes plus the Deluxe Collectors Package, PS1 game, DVD of the 2006 tour & the Red Weed game for Android on my phone.