It's Alive!
With the help of a dremel, Cat5 Keystone jack, silicon, RJ-45 connector, solder iron, RJ-45 coupler and RJ-45 crimp tool, I have modded the promedia 2.1 to use a cat5 cable to connect the pod to the sub/amp box.
It was a learning experience and would do a few things different if I had to do it again, but it's a solid connection.
Photos coming soon.