Capture sound from any external app

[Carl]

Hi,

Others have requested similar, see:

Roon as an output channel for other sources? Ugh, but maybe

I have a Roon endpoint as a raspberry PI I want to route my PC sound output via roon to this endpoint. e.g. if I am playing a game on my PC or streaming a video on the PC I want to send the audio stream to the device using Roon. I do not (for long an involved reasons) want to send the output via Toslink etc… but want to send via Ethernet to Roon. I have no idea if this is possible but I suspect not, can anyone point me in the right direction.