Just re-reading my (late night) previous post... and to clarify, what I meant was that I map one component input and one DVI input to multiple 'devices' in the 990. That is, I map as needed to what was (be default) Video 1, Video 2, Video 3 'devices' on the 990 and so on.

The 990 does not care that the Video for Video 1 comes from 'device X' and that the audio associated to Video 1 comes from 'device Y'.

Mark