The US version is getting a reprint, that does not include the OST CD (which presumably the original version did).
Official sites galore:
http://www.atlus.co.jp/cs/game/pstation2/dds3/ (Original Japanese version)
http://www.atlus.co.jp/cs/game/pstation2/dds3-m/ (Japanese Maniax version)
http://www.atlus.com/smt/main.html (US version)
I am not sure exactly when the reprint is coming out. Play-Asia currently quotes shipping times (5-15 days), so it may already be out.