I've been tagging all the mp3s I make from my vinyl, putting them in artist and album folders and then using Tag Sources Discogs to write tags and cover art to the files. Until yesterday, when I then opened Windows Media Player 12, the cover art showed in the library. (a folder.jpg also appeared in each album folder).
Today after I did the same thing with a load of albums, WMP doesn't show the art in the library pane, but does show it in Now Playing view. There is no folder.jpg created.
Presumably either Mp3tag or WMP was creating the folder.jpg automatically from the tags in the files and now isn't Why?
I know I can fix this manually album by album (eg "Extract Cover"), but it was working beautifully in bulk up to now. Any ideas?