i‘ve first used jellyfin for movies and series for a while and then decided i also wanted to add music streaming to my nas, so i put it into jellyfin. there were a couple of things that bugged me though, and so i also installed navidrome. jellyfin and navidrome have access to the same directory with all the music i own, and i have both finamp as well as amperfy on my iphone, and i really quite prefer navidrome with amperfy. so i would say that if you already got jellyfin for movies/ series and you don’t need a lot for a music streaming platform, it’s perfectly fine. however, if you need some more music streaming specific stuff, like a nice workflow for creating playlists, you may prefer to add navidrome.