> > It's already there. You can shave off about 12 GB or so on a full 145 set that is
> > rebuilt using 7-zip.
> do you mean that mame 0.145 recognizes 7z files by default?
MAME 0.145 is what was put out for MAME's 15th Anniversary. The stuff you are talking about, .7z support, is a work-in-progress and may or may not be 100% when the next U release is made. The savings are based on what people are reporting they are saving with converting a full romset to .7z.