So you're looking for a program that would read data from the network and write it to the display? Probably requiring that you quit the player program and run this one instead.

Maybe a VNC client? I'm not sure what the framerate is on the existing VNC server for the empeg. (wfaulk ported that, right?) Maybe a different program would give better results, but shouldn't be too hard to code for someone who knows how to do that -- which isn't me