http://www.daphne-emu.com/
It's an emulator to run laser disc games in your cabinet or on your pc. I haven't tried it because I don't have any mpeg files of the original discs.
What I do have are 2 original discs, an astron belt and a Dragon's Lair II, and if my limited knowledge of the law is correct, I should be ok to download copies of these mpegs, since I own the original discs (this sound right?). Now I just need to find a source for the mpegs, I am going to try some of the tombstoners and hope they might have them.
I tried daphne for DL... but didn't inhale =)
I don't think DL II is emulated in daphne (although I may be wrong)
IANAL either.. but if you were that worried about it you could buy the DVD-ROM from digital leisure and rip your own copies of the mpegs (for dragonslair 1/space ace/etc )... it's hard to know what legal anymore with DMCA outlawing anything big corporations want to regarding intelluctual property use/misuse... what you stated sounds fair, and doubt it would cause an international uproar =P (again IANAL YMMV)
Some tombstoners will do them, but most won't as there is a vendor currently selling the DVD-ROMS (i.e. flirts further with piracy...)
the mpeg images do show up on newsgroups frequently and there's a site where fans of mame go...
good luck,
rampy
PS generally asking for rom/mpeg locations is frowned upon here, FYI... but you weren't really asking ... just rheotorically speaking about what you were giong to do "out loud"... =) *shrug*