I (or better the community - it’s too much for me alone) would like to do this with music I don’t own yet. So grab freely available online music content (like YouTube videos) and scan THEM for loudness characteristics continuously.

Then upload that data somewhere to let others find music based also based on loudness data easily.

I’ll add this more clear in my first post.

True, scanning those values is not hard. I would have used https://github.com/complexlogic/rsgain for this.