"feeds to the Audio vox (you mean Box, right?) 96"
Studio Live 32 Mono -> Audio Box USB 96 Left
Microphone -> Audio Box USB 96 Right
That doesn't sounds like Mono to me. What's the actual problem here?
From a generic audio processing perspective, it does not matter what or how you are feeding the USB 96.
Source A -> USB 96 Left
Source B -> USB 96 Right
USB 96 is plugged into a computer that is streaming the signal. Use the streaming software configure the 96 and to mix the two channels.
So maybe that's what you are trying to ask?
If that is the case - focus on the streaming software and how it has the 96 configured.