I'm trying to use VAC to blend 2 mics connected to a PC into one audio mix, audible through 2 speakers, they currently come through one speaker each, my audio set up is as follows.

Windows 7 PC, 2 Singstar wireless mics with one wireless receiver, Realtek HD, audio out cable on PC to RCA in amp/speakers.

Windows only recognises 1 mic by default, so i have to go into Windows sound settings and change the mic receiver under the recording tab from 1 channel to 2 channel.

I tried the following which another user found successful, and this mixed the blue mic through both speakers, while the red stayed through one!


So under Channel Config select "Custom" and select only the "FC" check box.
4) Click the Start button and you should now hear yourself through your speakers.

Any VAC users out there that can advise me please?