Download the Beyond Good & Evil Soundtrack (extracted from the game) RAR file here.
Repackaged and now includes Final Suite!

Beyond Good & Evil Soundtrack released by Nintendo here.

The Main Theme from the Beyond Good & Evil website is actually Final Suite. If you wish to download this file independently of the extracted Soundtrack, please see below.

Download Boss Dead - Final Suite here.
(You may need to right click [PC/IE] on the link above and select Save Target As to download the file to your hard drive.)