You can do this with your PC. No need to spend 25 thousand dollars. You can build an HTPC that can perform the speakers crossovers, room correction, etc.
Try these links: http://www.home-speaker.net/htpc-build.html
and, http://www.home-speaker.net/speakercrossover.html
interesting stuff -I think. Behold is definitely onto something here. Also Goldmund makes a preamp that does this too, I think it's called the Mimesis 32 or something. Cost about 60,000 USD though.
Found the link to the Goldmund page: http://www.goldmund.com/products/mimesis_32
wish I had the money for that...