Non-expert here, but something I’ve read about popped in my head reading this, and I suspect it may be part of the solution you’re looking for.
Look up audio ducking. My understanding is that ducking means dynamically lowering the volume of background tracks when you want a voiceover (or other track) to be in the forefront. It looks like Davinci has settings to do ducking automatically.
The Anarchist’s Cookbook is actually legal to possess (and buy and sell). It’s a common misconception that it is illegal. In the US, at least.