Lidarr isn't just for piracy, it's a good tool for keeping your library organised.
It does musicbrains matching, fixes the metadata based on that, fetches pretty pictures of the artist etc.
There are other tools for it, but Lidarr is what works for me.
They specifically mention: lidarr is connected to sabnzbd. They add 'to download music I bought' but I find that very hard to believe.
Since when do sites like band camp etc expose your bought library over usenet?
He is implying that he only downloads music from usenet that he purchased in some form somewhere else. Whether that is any less illegal, I don't know.