i have no way to check it, but if you look here
http://forum.ppcgeeks.com/showthread.php?t=59236
http://www.amazon.com/Macally-Audio-.../dp/B000GGQ2ZU
they are using a 3.5mm TRRS jack (4 wire)
if you take a flashlight & look in the imagio's 3.5mm port you can see that we also have a TRRS female port. (like most handsets/hands free kits)
So has anyone bit the bullet & tried enabling the video out in the registry and trying one of the old ipod TRRS video/audio cables???