and yet I still beat the C64 expert AI consistently, almost never loose a game, the only question is how big a win is it

As far as copyright, yes, as I understand it, the original version is still under copyright, the publisher, Electronic Arts, has listed it as "Abandonware" and I haven't seen any indication that they are terribly interested in collecting royalties from any one selling anything related to it. The Bunten family sells official merchandise aimed at fans featuring original sprites, but they own the rights to Ozark Softscape.
As far as I know they endorse Planet M.U.L.E. as a free clone. Since it doesn't actually have an original M.U.L.E. elements, I don't think it violates any copyrights, the grey area is the name, but since they endorsed it when Turborilla started work on it, that obviously isn't a problem, and Turborilla isn't making any money on it.
http://www.planetmule.com/forum?topic=230.0 (A post on Planet M.U.L.E. forum by Melanie Bunten)
http://www.ozarksoftscape.com/ozark%20softscape_001.htmhttp://en.wikipedia.org/wiki/Ozark_Softscapehttp://en.wikipedia.org/wiki/M.U.L.E.