[lch]

I think that at least Amos gave an univocal "do with my stuff in any way you please" in here already, and Zepath was fine with people picking up his stuff as well. I'd think that Sombre and DrPreatorius aren't adverse to that, too, especially if you do give credit. I'd say you should do it like the others who have been quite often leeching off KO's work, too: Release it and in case somebody really complains, take it back. As far as I know nobody was giving a specific license under which his stuff is released, so you can assume that things are in the public domain if there's no mention.