Este é um trecho do Windows 8 Dummies
If you choose the Documents library, for example, the Documents Properties dialog box appears
Click the Add button.
The Include Folder in Documents window appears.
Navigate to the folder you want to add, click the folder, click the Include Folder button, and click OK.
The library automatically updates itself to display that folder’s contents, sorting the contents into groups.
You may add as many folders to a library as you want, which is handy when your music files are spread out across many places. The library automatically updates to show the folders’ latest contents.
To remove a folder from a library, follow the first step but click the folder to be removed and click the Remove button.
So, when you drop a file into a library, which folder does that file really live in? It lives in the folder known as the Default Save Location — the folder that currently holds the honor of receiving incoming files. The Whole detailing can be found here.
A Biblioteca do Windows 8 pode ser gerenciada por uma ferramenta chamada Bibliotecária. Tente encontrá-la na tela principal ou faça o download da última versão 3.0 em aqui .