Quoted from nosro:I wonder if this might be a problem. If you recall, the incredible Vangelis soundtrack was unavailable until 1994 due to some sort of disagreement. It took 22 years before the soundtrack was available to the retail public! (A couple of tracks made it to a 1989 Vangelis compilation.) I shudder to think what the licensing hurdles might be for the music.
I couldn't imagine a Blade Runner game without Vangelis.
Well, indie electronic musicians have spent decades imitating Vangelis, I can easily imagine a suitable replacement being produced. The PinOut soundtrack is a little more "space disco" than "space jazz" but it's pretty appropriate. Slap that on with some rain effects and a bunch of EL wire...