Soundiiz imports your playlists and favourites easily from Plex to Discogs
Plex media server allows you to aggregate all your personal media and access it anywhere you go.
Discogs is a website and crowdsourced database of information about audio recordings, including commercial releases, promotional releases, and bootleg or off-label releases.
Soundiiz is the most complete online tool to manage your music library between multiple services. It offers a simple way to import and export playlists and favorites tracks, artists, and albums.