There's at least a good 2hrs of SW's score going by the gamerip compared to 75mins on the CD release, so if I had to guess I'd say it's a three-record release of it all. Definitely gonna pick this up, Bross' work on it is terribly underrated.
Worth mentioning that vol.1 is still available on CD for a mere $2.99 (cost around ten total for shipping to Europe) at
http://www.keepmovingrecords.com/eng/disc/28/