Just want some confirmation as well on if your giving it away or what? Its a very nice, simply ambience music, very choice for most games, if you are willing to give it, you would definately be #1 on my credits.
Unforchanately I don't want to give you any false hopes, why I think you could definately sell what I've heard, I'm not one of those that are willing to buy, tight budget I'm afraid.
P.S. I will even give the players a URL (if you want) in the credits (if you give it away for free that is)