Extract Audio Narration Track from Keynote with Voice Over

I just found a way to extract the audio narration track from a keynote I recorded using the voice over feature.

I used BetterZip.

I right-clicked on my keynote to show the "Open With..." contextual menu. I had the keynote open with BetterZip instead of Keynote and it extracted all the elements of the presentation into a folder. I saw in there several audio tracks.

Now, Keynote did not split the audio tracks into individual slide snippets but that's better than any other technique I have read on this forum so far.

I hope this helps someone in the future.