Add AudioBook library(mp3) in Media Player other than Music library

[htronjp]

I added a new folder under the "Libraries" and linked it with source audio file(mp3) folder.
But Media Player does not recognize new folder, and could not find any hint in the Media Player Help.
Teach me how to re-organize, to add new library addition to default Music library, Media Player.

 

[LuzTeTT]

On Windows 7 if you include a folder or directory in the Music library, usually shown in Windows Explorer on the left hand side (ミュージック), it will eventually populate in to Windows Media Player's library.

linked it with source audio file(mp3) folder.

You can not use a file shortcut, or *.ink files, you must add the directory manually.
This thread has covered how to do this in great detail with illustrations and pictures included.
http://www.sevenforums.com/music-pictures-video/119202-wmp-12-wont-add-songs-library.html

This knowledge base article may also be useful for you.
Add items to the Windows Media Player Library