It was from Roon Labs.
I don’t have any problem with it. I’ve used Soundiiz free tier a while back, and was pretty impressed with how well it worked. There’s nothing better that I know of for moving collection infos around.
I’m guessing Roon highlighted it for people thinking of trying Qobuz and/or Roon as a way of migrating their playlists and collections from, uh, other services.
Maybe they get a nickle or two from Soundiz… No big deal.
P.S. If I’m not mistaken, you can pay for a month of Soundiiz and do what you need to do and then be done. Depending on how extensive your needs, it could be a bargain v. doing it manually.
(And P. S. I have no affiliation.)