There are several popular ID3 tag editors available for PC and Mac computers.
I like to use the software mp3tag.
If you decide to try this software, you will see several ID3 tag fields in the left panel of the editing screen.
The field “Album” is used by SanDisk players in the mp3 display screen (for Music, Audiobook and Podcast files.)
If you would like the SanDisk player to display the subfolder names you created inside your Audiobooks folder (using BOOKS mode), then use your subfolder names in the “Album” field of your ID3 tags.
The mp3tag website has a wide variety of helpful information that goes way beyond this liimited discussion.
