How can I use my Snow as an audio/MIDI interface and a module concurrently?

[McFool]

Hi all - I'm a fairly new Virus owner, and after much dredging around in the manuals and so on can't figure out how to achieve the following:

I have a controller keyboard hooked up to the Virus via MIDI, and then my laptop (MBP) hooked up via USB. I'd like to be able to use my Virus as an audio & MIDI interface to play soft synths at the same time as using it "live", i.e. as a synth. It appears that when the Virus is connected via USB, it disables the internal "local" MIDI connection between the incoming MIDI signal and the synth engine.

I can achieve what I'm after by hosting the TI plugin on the computer, but that is a bit clumsy and I'd much rather be changing sounds and tweaking from the front panel. Is there some kind of loopback approach in the computer which would make this work?

Any suggestions gratefully received - thanks.