To clarify the question..
I think the OP is asking about using the Ultra Studio as an output device to send video out of a pc into spyder (or whatever) - the EDID thing is red herring as output from BMD devices is defined in BMD control panel, the devices send whatever format you have selected regardless of EDID (generally you'd send hdsdi which has nothing like EDID anyway)
I'd suggest that the issue here is finding a good playback app on windows which supports BMD video output. Media Express is clunky and less than ideal really.
CasparCGis great if you can get your head round it.