wow great post and great idea
I cultivate this idea about a month already
I have macbook, PC, and airport express as music sources
and I have speakers and wireless headphones (actually 3 pairs but I want to have ability to switch to one at least)
so at minimum I want to setup configuration of 3 inputs X 2 outputs
I think with the IC in the post I can achieve this.
I have only 2 question which can help me a lot in choosing components to buy
1) I have quite hifi outputs - in PC it is Xonar essense XT and airport express has it's own DAC and macbook is not too bad as well. Does this IC correspond to this quality barrier so I dont distort the signal to much?
2) I dont need any mods to the signal - as bass or volume, is there a way to switch these off so the sygnal is not modified in any way using this IC (I mean I need to setup just a matrix of relays - no modification is needed to the sound - and I actually prefer zero modifications)