Musicbrainz gateway

setting with using
doesn't work.

P.S.: i try to run musicbrainz gateway for the first time with Mp3tag. is there some beginner mistake?

Why do you wanna use musicbrainz gateway? It is desinged for real audio cds, not ripped and encoded files.
It can work with compressed files sometimes, but it is not very likely.

I really don't know whot I meant by this post.

I already reach integration of Musicbrains in different and better way.