The recommended folder structure for audio books is Author\Book Name\Chapter.

 \AudioBooks
    \Author
       \Book Name
          1- Chapter 1.mp3
          2- Chapter 2.mp3

This is not a requirement and other structures will also work, but this is the most common method. Some other examples of supported structures are Book Name\Chapter:

 \AudioBooks
    \Book Name
       1- Chapter 1.mp3
       2- Chapter 2.mp3

Or even a flat library of chapter files:

 \AudioBooks
     1- Book Name - Chapter 1.mp3
     2- Book Name - Chapter 2.mp3

Track/Chapter numbers are retrieved using embedded ID3 tag information if present.

Multi-Disc Audio Books

You can store you media in the following format for convenience but Emby will not pick up the "disk #". In order to use this folder structure you will need to use an external tag editor such as MP3Tag. Using MP3Tag you would highlight all files in each folder and assign a single tag for the disc # and save. Emby will then read the tag and show as well as sort your audio chapters by disc.

 \AudioBooks
    \Author
       \Book Name
          \Disc 1
             1- Chapter 1.mp3
             2- Chapter 2.mp3
          \Disc 2
             1- Chapter 1.mp3
             2- Chapter 2.mp3

Audio Book Images

Images are supported in both artist and album folders, as well as images embedded within audio files. Below is a table of the supported image file names:

Supported image extensions are jpgjpegpng and tbn.

Several image types support multiple file names. They are listed in the order that they're checked for.

Image TypeSupported file names
Primaryfolder.ext

poster.ext

cover.ext

default.ext
Artclearart.ext
Backdropbackdrop.ext, backdropX.ext

fanart.ext, fanart-X.ext

background.ext, background-X.ext

art.ext, art-X.ext

extrafanart (subfolder)/fanartX.ext
Bannerbanner.ext
Discdisc.ext

cdart.ext
Logologo.ext
Thumbthumb.ext

landscape.ext


For backdrops, X represents a number, and you can have any amount of numbered backdrops. For example:

 \AudioBook
    \Author
       backdrop.ext
       backdrop1.ext
       backdrop2.ext
       backdrop3.ext