The old link/favorite I had saved and the main return result when I google for the "downbelow sound archive" doesn't work anymore, apparently. The one the two posters above listed does work, and taking note of the address for their links, it's different than the address saved in my favorite/link. So, it looks like the address has been changed slightly from
I'm guessing that this is what also happened for you; you had the old address. Thanks for bringing this issue up though, because had you not and the above posters not replied with the new address, I would not have known that the address had changed.