Each Synchromesh audio output can create a separate mix, between the playing clip and a transitioning clip, and also between channels of one clip, to create the correct channel layout.

In practice, this means that audio channels can be used as a finished playback mix. As each new clip is played, a clean cross-fade matches the video transition. The gain of each clip can be set to maintain consistent levels, and as with all video adjustments, the gain change is non-destructive - it's generated by the output mixer, not burned into the file.

Each channel within a clip also has a gain adjustment, so when using discrete channels, or surround mixes from different houses, you can adjust the mixes to get back to a consistent set of levels from your DDR.

If an output has a channel layout other than stereo, then the clip will be mixed based on the clip's layout. If the layout matches, for instance a 5:1 clip playing to a 5:1 output, then each channel is gain corrected and mixed. If the channel layout is the same type, but layout is different, for instance L-C-R... instead of L-R-C... the deck will translate if the layout in the media can be detected.