I reckon the problem with that is… what’s the source for the recommendations and then what’s the sink?

Like, first, how do you get all that information about music, type of music, musicians, year of release etc?

Then where do you store it? Then you come to the problem of building a robust recommendation engine. Sure that’s one step that seems solvable with open source. Not easy. Solvable.

Then, what does a person do with the recommendations? So you have to build ways to export to YouTube, Spotify, Apple Music, FOSS music solutions. Perhaps plugins are the way to solve this.

Not saying it’s not doable. Just difficult.

Though I also believe someone would have tried to tackle it in their capacity in the FOSS world. Don’t know how Fedi plays into this. Maybe an online radio station?

Spotify scrobbles to LastFM. Maybe they have an API or export solution? All you would have to do is play your playlist straight through once after connecting to LastFM.

I don’t know about importing it further as I don’t know what Navidrome is.