LOL. I didn't have any reference to go by. I was mostly trying to work on the idea of it seeming like the sound was mostly being transmitted through your bones -- that it's inside your head. Not sure how that *should* be done, but I got an interesting effect, whatever it is.
Thanks. There are plenty of characteristic sounds like that from our everyday world that can either be hard to capture, inconvenient to do so, or whatever, and they're hard to find. Once in a while, a notion strikes me to capture such a thing. :-)
As for attribution, the licensing terms include a requirement for providing a link to the individual sound used (for each one).
I personally also like for these attributions to be included in whatever searchable text is published to the web (if at all) in addition to the delivered product itself. For example, if you put up a trailer on YouTube that features that part of your game, you should provide attribution in the description text of that video. I describe that in my profile, and you can also find the bare minimum covered in the freesound FAQ here: http://www.freesound.org/help/faq/#licenses-1. I also don't mind the use of my actual name (Keith W. Blackwell) in addition to the url which contains my user name (zimbot).
I'm making a game and using this sound for a Hell scene so i will be using the whole thing if you want I could put in the credits otherwise I'll just mention that I did use some things made by other people.