Yep, It's me again! Just one more thing I thought of is the way I had a Sega Gamegear installed into a vehicles glovebox alnog time ago. I had pins just like the Pronto and it's charger, that would conduct power to charge the game and also send sound to the stereo system. You could do this to the universal remote and have it sit on a cradle or stand. Inside the remote, the wiring would still need to be done but no externial wires would be showing.

Chris