Does this have a CD soundtrack

Not as far as I am aware but, if so, probably only in Japan - in which case your best bet to find it is probably ebay or Amazon Japan.

IMO, the sound quality of the subbed VHS version was, surprisingly, better than the U.S. DVD release. For example, the music swells awesomely the moment Kyoya gabs his sword from atop the rubble pile toward the end of the movie only in the VHS version. Something was lost in the transfer to dvd.