Assassin's Creed III isn't even in stores yet — you'll have to wait until October 31 for that — but if you so desire, you can listen to the full Original Game Soundtrack. It will jab a hidden blade into your earhole and gently massage your auditory canals. Be prepared.
Be ever-so-slightly warned: there are the smallest, most insignificant of spoilers in the track titles, but nothing I was fretted over — and I consider myself a fully signed up member of the Assassin's Creed fanclub. You should be fine unless you happen to be really, really sensitive about these things.
Great find Crazydude!