On my side, i'm playing my content with my AppleTV through a Plex server on a Nas, using wired network, and I couldn't be happier. Using a professionnal, closed, solution, sometimes make things better.
Another path is to go in search of a better way to enjoy the music.
Both have their value, but if you start down the path of looking for the better way, don't lose track of the original goal. Too many audiophiles are still listening to their equipment instead of the music.
(Same goes for people playing vintage video games, watching movies, writing things by hand with fountain pens, supporting sports teams... this is a core part of modern civilization, I think.)
When I used Kodi that was part of the appeal.
But then I had two Kodi boxes and media on a NAS and wanted them to sync played status. Eventually Emby with the Kodi Sync plugin was the way to do that instead of trying to share a database.
But then I got an Apple TV 4K, and the Emby app runs on that too, and now same as you it’s what I end up using.