This post focus on the Windows Shell Programming model that you can use to access libraries even without using the latest IShellLibrray APIs, and will further explorer the opportunities to let users select and consume Libraries as if they where regular folders. Let’s imagine the case of a slideshow application that presents users' pictures. By using the Pictures Library, users are essentially telling the system that their important pictures are stored in the Pictures Library, and therefore, our slideshow application can simply be pointed directly to the Pictures Library and show the users' entire pictures collections.[…]

Full Article: Windows Vista Team blog