Thought about buying another external drive. (Already running 4 - 500 gigs) Doing the same for my sega cd, saturn, tg16 cd, cdi and 3DO. Based on my calculations I would need a heck of alot of disc space, By putting them on disc, I can save a lot of disc space. I know I could leave on disc and just put on hard drive the ones I play alot. But, its cool when the friends come over to see your big list of what you have to play. Since everyones taste is different, it would be easy just to plop in a cd or dvd to play their favorite games. My thought was, I can run mp3s thru GameEx off of a cd. Treats it like a hard drive. Envisioned a map file that would display all games in the map file in GameEx. When it compared them to the disc, it would color change the ones it matches on the disc in GameEx. That way you would know which ones are available for play. You would also know from the list which games you have from the list. (you would rim out the ones in the map file you don't have so they wouldn't be displayed in the list.) Long term it would be cool to not rim that out but maybe adding the word needed next to the name in the map file so you would know a game exists but you don't have it yet.