@Harrison
Do you know what files are all included in this torrent? I never downloaded it, and I don't know what exactly it is. It has a lot of files and contains several emulators as I can see. But I don't know what for. Are there games within, which don't run in MAME yet? I hope you know.

Also I downloaded the ultimate NeoGeo torrent. It contains 4 folders, but the ROMs seem to be the same as MAME uses.