I've got OpenMeetings installed to the point where that it is able to provide a video feed, from an XP box, to anyone else that connects. I'm having issues with the webcam on the Linux box (its the same make/model as the one on the XP box) so I'm thinking that either the webcam shouldn't be run on the server or there's something hardcoded which requires that clients be Windows based.
I'm hoping that I find a howto or a troubleshooting page soon. That's the trouble with in-development code: documentation tends to be a bit sparse. Notes here.