A youtube user called "Marco Soundtrack" uploaded the tracks from the game and I ripped them and converted to mp3. It claims they are from the OST but I don't think an OST was released yet. Anyway here is the link
Ridge Racer Unbounded 192kbps MP3.zip (http://www.mediafire.com/?mdq4s362uclr3z2)
Alot of the tracks (music) from the Ridge crew are recycled tracks from 6 and 7 though.

Thanks :)

You could re-upload? I'm looking for this soundtrack everywhere and i just can't find! Thank you.

Bump and re-up. THX!