Thanks, here's a video recording of what I have done to it, and it working now.
http://www.youtube.com/watch?v=6iyOSJAmyeM
The sound is recorded directly from the real Genesis that's running this, which has been hacked quite a bit with a newer sound chip (clear FM synthesis than the original, but unless games take use of the digitized sound sampling function correctly, like gun shots and drum percussions, they don't sound better).
EDIT: Just realized, for some reason I knocked the focus off half way through. :/ whoops! I'm using a real movie camera for this, not a cheap home camera, so it has a large focus ring, I must have knocked it at one point.