I believe I have some similarly ripped movies, if not I can recreate your settings and test it out. Not a lot of mac users on this forum :-D

I'll give it a look in the morning (not now, the real morning, like noon, hehe).

EDIT: b666 is probably right about the container. Since the files aren't DRM'd you can probably even get away with changing the extension. You can make an automator script to batch change them (test one first!)