2.0 + 2.0 = 4.0 Output?

Hi

Is there anyway to configure AudioMulch for 4.0 Output instead of 2.0 like using 2 AuxOutputs? I want to play music in Stereo over a pair of speakers and use another Stereo setup for speakers to run effects & reverbs.

At this juncture I'm left with but 2 options:

1) Buy 4.0 soundcard and control the 2 Stereo Outputs with AudioMulch. (More possibilities, less cost)

2) Buy a Multieffect DSP and run everything over the 2.0 Output of the soundcard (more practical)

Can this be achieved with AudioMulch? I can find no information on the net and I don't have a 4.0 soundcard yet to begin with.

Regards