i think it's impossible, although there are exceptions (barry just got a mac recording to playback with mame32). most of the older mac recordings i've seen DONT have a header line in the inp file, similar to how xmame makes inps. But even if you had a converter program that added the header it would still not playback in dos mame. i believe xmame will playback mac recordings but this is from possibly obsolete expereince.(posted 8726 days ago)this indeed sucks since it means a lot of people won't be able to playback some good recordings.