Volumo: MusicBrainz Importer
I’ve also been working on an importer for Volumo. Most things should work, maybe I add more features. It’s loosely based on the murdos importer userscripts.
Besides importing releases and looking up on Harmony (including MBID if found for easier updating), it can also seed labels and artists with their links plus area (If the country_code matches the ISO code). It tries to find existing releases by URL falling back to a barcode based search and allows seeding the Volumo URL.
Since artists are set similar to Beatport they also have special handling like filtering remixers from tracks or truncating release artist to “Various Artists” if there are too many.
Dates also needed a bit of special handling for “exclusive” releases.