Your folder would been threated as Singles, since you have mixed singles and albums. MultiJuke dosen't like that, so you wont been able to use your albums here and list songs that use album. These songs using albums would simply been skipped or show wrong.
You need to use one extract folder Format Mask to been use on ALL folders in a library or enable tags.
So you must done one of these thing:1) Use a second library for singles only and move them out from the path. This is the best way.
2) Create a singles folder as a album name, so it use Singles like it was a album:
/Mp3/Artist/Singles/*.mp3
/Mp3/Artist/Album/*.mp3
In next version (released), 1.10.2, you can now use something like this:/mp3/artist/albums/0 - title.mp3
/mp3/singles/artist/tracknr - title.mp3
or
/mp3/artist/albums/Artist - title.mp3
/mp3/singles/artist/tracknr - title.mp3
You still need to use a list a artist or 0 as trackname, if you used a track nr in your albums. Otherwice this is not needed, if you not used tracknr at all in albums.
This because MultiJuke might not detect Format Mask correctly, so you can't define the song title in Albums folder....