"The software [called Rinions] is developed by Fumi Hax (Fumikazu Iseki IRL) at the Network System Laboratory group at the Toyko University of Information Science," she says. "Their website is here. There is actually a more recent version of Firestorm (4.6.9) compiled with the Rinions code available now and it's pretty easy to setup and run. I've even been able to get the animation server working, so if another person had the proper software installed, they could see my movement in their viewer in real time (versus over the stream)."
Got questions about the setup for Jessica? Ask her in Comments!