How to connect roland mc 909 to Access virus?

if you are working virus as a standalone mode you have to load input patch and then you will hear the sound from your mc..
or with with virus control you have to route usb1-3 channel with your live...
create an audio track and select your virus ti input ch which you want...

I have these two devices as well. What are you trying to do? Route audio from the 909 into the Virus? Control one from the other over MIDI?