You can change the settings and make it save all the metadata in a "jukebox folder."
Right, but unlike PCH and Dune, the 450X2 & 500X2 aren't actually using what's in it. Rather, it's what Y2M uses to generate the about.jpg, folder.jpg and moviename.xml for each movie that get exported to that movie's folder.
The about.jpg for each movie is basically the fanart with the movie title and details burned in. With PCH and Dune, it's HTML (or Flash) & JPGs that get called in when you view the movie details. With Mede8er, the XML file for each movie is basically like the NFO & what Mede8er uses for searching by title, year, genre, etc.