What do I do now I tried to use the program I have no idea how I saw something about discogs whatever that is I tried filling out as best I could all the information i just get error messages I thought the program looked for album art and then put it on the song file easily
see the documentation for first steps
and see the documentation on how to use tag sources:
You can also just add an existing image via the right-click context menu of the cover art window on the Tag Panel.