Efficient Routing...

[SeeEmm]

I'm having some difficulty with atomizer using my TI keyboard with ableton. I've searched the forums and haven't found an instance like this, so right now, what i am trying to do is... take the drums in channel 1(in ableton) and cue them out into the virus>mixer>monitors using my firewire sound card. I also have all of the other channels running dry into my mixer>monitors in a seperate channel on the mixer. For whatever reason the atomizer function is not working...why is this? I'm thinking this may be because i have my firewire soundcard set up as the audio I/O device(in ableton), but I need this to output my drums to the virus. Can someone offer a suggestion as to how Imight most efficiently route my signal to atomize just the drums using ableton, a firewire 4/10, my TI keyboard, a mixer, and my monitors...? thank you!