Main theme download
I've seen a few people around here asking what it's called or where they can get it. Through very low-level internet detectivery I've found the following link which allows you to download it right from the composer's website. Unfortunately it's in a really bad bitrate, like 77kbps MP3, but it sounds alright. There ya go.
http://www.georgesclinton.com/projects/brainscan/index.html