Thanks for the answer. Maybe I don't understand the import process, but the cover art filenames are not consistent. It would be a lot harder to type the filename to import each time versus dragging the image into the box.
You can embed the album-art without using another program.
You can add a cover-file by a right mouse click on the cover-field and select "Add Cover".
Or you can D&D a cover-file from the windows-explorer to the cover-field of the shown cover in MP3Tag.
If the name of the cover-files in your folders have some system, i.e. "Beatles - Help - Front.jpg" that is equal for all folders, you even can import all your cover-files in one go with an import-action.
OK, in the Eric Clapton folder, there are 5 other folders (albums).
In each album are the music files and the corresponding cover art.
For example, Eric Clapton - Time Pieces has the eleven tracks and one jpg named ericclapton_timepiecesthebestofe_74mf.jpg (the name the album art site gave it).
Also, Eric Clapton - Unplugged has the 14 tracks and one jpg named eclapt-unplug_07.jpg (the name the album art site gave it).
When I highlight all the tracks for Unplugged in Mp3Tag, the art eclapt-unplug_07.jpg shows in the box. If I right click on the art, yes, I can navigate my directories to find the file that I am ALREADY looking at. Or, I can drag-drop the file I am ALREADY looking at over itself.
Seems like I should be able to right click on the art that I'm already seeing and say "Use this one".
There is no system in naming the cover-files, so a mass-import is not possible.
Perhaps you should use a software like AlbumArtDownloader which looks for album-covers and which you can tell how to name your fin a systemtaic way.
No, that is not possible.
But you can define the folder so that there is no navigating necessary: