I use Bandcamp and redacted to fill my NAS, which runs Plex with a lifetime Plex Pass. For playback I use PlexAmp on Windows, iOS, and macOS. Very pleased with the radio / shuffle functions, sometimes it’ll absolutely nail a beat- and key-matched cross fade. Great for local library discovery.
My music library has continuity all the way back to 2000, I’ve still got a few vintage Napster MP3s from the 56k days.