Virus not my sound card, route audio via USB

[simog]

Hi all,

I am running Ableton live 8 with an external soundcard and the virus is plugged in via usb.

I would like to route the audio from the virus to different usb outs so I can utilize the side chain effect in ableton without affecting all the patches the virus plays.

Can't quite see how this is done in live, as all the audio preferences relate to the sound interface, and nothing for the Virus so if I then switch a patch to say usb 3/4 I can no longer hear it.

Is this possible in live or am I going to have to do something else like route it into the interface through the analog outs instead?

Anyone done this in Ableton?

Cheers,

Simon