Actually, I think it might be a new mistake; I saw a YouTube video of someone playing a new (I think, but I don't know exactly which version, though...
When I first saw it, I think I was surprised to hear those sounds. It seems a bit odd to put in sounds that are only available to certain users, even...
If you're playing KeeperFX 1896 alpha, you may want to get the new sound.dat if you haven't already, if you really do want to experience all the new...