Allows you to customize the mix of tracks with Stereo Mix selected in the Output Options pop-up menu.

You can choose the following channel combinations: 1 & 2, 3 & 4, 5 & 6, or 7 & 8. The system sends a stereo mix to the two channels you select. Material that is panned to the left will be sent to the odd channel and material that is panned to the right will be sent to the even channel.