How does Windows 8 set up the Metro media storage location?

Win8, Metro interface comes with music, video and photo software default playback content is "library", in order to add music, a storage media other than the video library, you must add this location to the appropriate Library.
Add media location to the library:
For example, add the “video” folder to the video library.
“Right-click" folder name, select “include to library", select “video”.

Opening the video app that comes with the Metro interface will automatically display the media files in the library.

Delete media location in the library:
For example, delete the “video” folder in the video library.
Open “Computer”, in the left navigation pane, select “Video” under the "Library" directory, right click on "video"; select “properties". Select the folder you want to move out of the library and click “Delete”.