I just released SongKong for our sonicTransporter.
SongKong is designed to be the easiest and fastest way to organize your music – identify songs, fix misspellings and add missing album art. SongKong uses intelligent acoustic matching from Acoustid to listen to your songs and find matches even when they have no information at all, but also takes advantage of existing file information to ensure you get the best album match. SongKong uses the JThink Music Server regularly updated from the MusicBrainz and Discogs databases giving you more accurate matches, faster.
This works really well if you have music with messed up tags or WAV files with no tags. You can get all your tags and album art right using songKong then you can import the music into Roon. Roon will add all it’s rich metadata but you will still have a lot of the data storage in the ID3 tags and usable by any music playback app.