How can you play page and narration audio together?

There is a conflict that prevents using page audio (like background music) if you want to have an audio that reads a sentence out loud.

You have to set the reading audio to "stop all audio before playing" so that multiple clicks don't start multiple playbacks of it (it sounds like a crowd of clones). 

And when you use this setting, it kills the page audio.

I assume a solution of some kind won't come until Narration is restored.