Our church currently has a Dante network. We want to use a Windows laptop with DVS, ASIO, and Studio One 4 to mix the streaming audio. In SO4, I'm successfully able to input 16 channels from the Dante network and output channel 17-18 (via SO4 mains) to the Dante network for streaming. The laptop is in another room from the FOH mixer and video streaming computer. When I have a pair of headphones plugged into the laptop, I can't find a way to monitor the mains. In SO4 setup, only the DVS is listed for input and output.
The laptop will be in the sanctuary during the traditional service so the FOH audio tech or video streaming tech can mix the streaming audio which is generally a couple of mics and a piano etc.. During the contemporary service, the laptop will be moved into a separate room and ran by a dedicated streaming audio tech for a full praise band. We decided to use a laptop for portability and not purchase another mixer.
My workaround would be to purchase a 2-channel Avio interface and connect it to a 2-channel headphone amp. It's not a preferred option but would work.