> Why not give an option to use MAMEZIP? Mamezip is a java script i think that
> makes sure all zips have same crc as everyone else, then u can share on
> bittorrent or kazaa, or any other p2p program and only download the changed
> roms. Was reading about it on Mamereactor.com
>

Because he wants to use the zipmax features like multiplexing the files to get smaller files.

Roman Scherzer
ClrMamePro