Using SWHY As Stereo Mix Alternative

Hello, I hope all is well.

Recently our computer broke, which we used to stream all our audio from, using stereo mix, streamed directly to Edcast server.

Our new PC, does not have stereo mix on it, so I have found this tool, my question is, can we use this to stream direct to our edcast, and if so, how do we do it?

Thanks,

Paul