I don't know where it is atm, I can't find it on the site or in my files.
But this isn't what you think it is anyways. It has noting to do with playing the maps. What this tool does is create two more files that you put with the map file, then you unzip all three files to you RC folder and run the one, it will add the map to you maplist.
The maplist is just what shows up in game when you go to make a server.
If you want to play them send the same one to everyone and get it in the Maps folder, then start a server and do a switchlevel command.