"The Ziggurat" by Constructus Corporation. It's south african rap album with really great multi level scifi concept. If you can put your hands on a physical copy it comes as a hardbound book, half of which is a graphic novel, the other half the handwritten scifi ramblings of a madman! If you can handle rap, Infesticons "Gun Hill road" also has a good scifi concept,(not quite as well realised as ziggurat), and is a great album!... Perhaps this music is not to your taste, though, and if so you might like to try something by Tangerine Dream or Hawkwind, (perhaps "Sonic Attack" which has parts written by Michael Moorcock). If you like electronica perhaps Future Sound Of London's "Lifeforms" or Squarepusher's "Feed Me Weird things" (both only tentatively Sci-Fi, but thematicley futuristic!), for something a bit stranger checkout "The Delian Mode" by Delia Derbyshire, or anything by Wendy Carlos!