MIX and RENDER Function in Audacity
Here we'll be looking at creating submixes with the MIX AND RENDER function.
You've done a lot of edits and now have dozens of little tracks with little bits and pieces here and there. It might look like this:
Bits and Pieces spread all over the screen
First four tracks selected for quick mixing
We can use the MIX AND RENDER function in the TRACKS menu to bring down the number of tracks. However, you don't need to mix everything in to one new track.
Select the tracks you want to mix together by SHIFT+click 'ing on the track panels. In the graphics above, the first four tracks are selected.
Then select MIX AND RENDER. In this example I have quick mixed everything down to two tracks :
Bits and Pieces, mixed down to two tracks
And thus, two submixes were created. Remember though, that we did this for convenience of not having to organize a large number or tracks.