v2.1 [Dec 29, 2017]
winLAME used the Freedb service for looking up CD disc and track metadata that is used to fill the audio tags (like ID3v2) during encoding. It seems the Freedb service, always provided for free by Magix, is no more. There are some alternatives, like gnudb, that provide similar services.
With the new AppVeyor build 2.2.0.79 (or any later build version) the default Freedb service in winLAME is now gnudb. You always can get AppVeyor builds here: https://ci.appveyor.com/project/vividos/winlame/build/artifacts