I've made a video of a new 3D arcade in RetroCopy. It's more a possibility of the future of RetroCopy and it's virtual room than anything else.
One thing I realized while making this video is that DirectSound3D is completely inadequate. I'm going to be introducing my own 3D sound engine for v0.800 that removes most of the issues with what I am doing at the moment.
There are 16 virtual lights and 16 virtual arcade machines in this demo. It runs at 40+fps on my I7 @ 4GHz even while recording it.