StimTracker for onset of vocal response

I wonder if anyone could guide me through this. I would like to use of StimTracker as a voice-key device with SuperLab4.5 but cannot find a simple way to do it!:confused:
Thanks a lot

When plugging a microphone into StimTracker, the current generation model can send output via TTL to the EEG device only, unfortunately. Voice key information does not flow back to SuperLab via USB.