As per @batFINGER answer and his provided link, it's possible to create a custom property, keyframe it and bake the sound into it.
I can therefore create prop and bake sound into it starting on frame 1.
Then I can create a prop1 and bake sound into it starting on frame 3000.
Finally, I can add a driver onto my objects z location. Such driver should have two ...
I had similar issue with no audio in VSE but audio in rendered video. I tried all the suggestions and found a different solution.
In my particular situation- I had no success with blender system audio settings, disabling mute, and I was about to download pavucontrol until i realized im on windows 10 not linux.
Then I looked into a similar direction within ...