LaserDisc emulation has been in mame since last summer. In addition to most of the games daphne supports, it also has support for the american laser games, like mad dog mcree. It won't do anyone any good though. First off it'll use a totally different set of video rips, video rips that could be as much as 5 times the size of the daphne rips. Secondly, said rips have to be done by the mame devs and they don't appear to be in any hurry to make them anytime soon. As I said, most of the laserdisc games have basically been emulated since summer, we are just waiting on video files and/or a tool to make them outselves.