You can use the .cfg, .map, and .rom files to create custom menus for gamelauncher. Useing the existing mame.cfg, mame.map, and mame.rom files as templates, you can create menus for as many different mame lists as you want. For example, I made a mamesports.cfg, mamesports.map, and mamesports.rom. The mamesports.cfg is the same as my mame.cfg with use rom list marked "yes". The mamesports.map and .rom files only reference mame sports games. In gamelauncher config I added mamesports as an emu. This loads a gamelauncher menu with all the mame sports games. Might be a little cumbersome but easy to do and works no problem.