you download eduke32 from the eduke website, and then you extract the zip file into the files for world tour. Then you download the Compatibility Stopgap for world tour, unzip the contents of the folder to your world tour directory, you then create an autoload folder for 1 thing, the SC-55 music pack, you don't have to extract the zip files for it to work, if you've followed the steps, you should be able to run the stopgap and episode 5