Remote Audio

Hi

A friend and I are trying to link my audio output directly with his with my output going directly to his machine so that he cam master it remotely.

So far we’ve been unable to do this. Is there any particular software that might be good for this? I am using Cubase. He is using another DAW.

TIA

Listento by Audiomovers is nice solution. But for that, stems would be much better if its for mastering purposes.