Receive Live Audio from External Application

As far fetched as this may sound, I want to be able to receive audio from another application running on the PC, mute its own output, and play it through unity's own audio system...

The end goal is to play the audio through the "audio source" component.

I was thinking that I might have to spoof an audio driver or something? I really have no clue where to even start, I'd imagine a solution (if even possible) would be pretty complex, so I don't expect a fully comprehensive answer, even a point in the right direction would be greatly appreciated.