Unreal Tournament 99 maps for OSX

Hey. I recently acquired a copy of the old Unreal Tournament that has already been converted for OSX, (This game is no longer available for purchase and the OSX version is an uncopywrited rewrite of the game. So it's not piracy in my opinion.) Anyway, there are some missing maps in a unix executable file format in an ajacent file. Normally, a map has the suffix .unr. These extra maps have the suffix .unr.uz. I understand that these are compressed versions of the maps, but I can't seem to find something that will decompress them. I would really appreciate any advice you Geniuses can give me. Thanks!