Searching Computer for Music Files
You may have already copied and organized your music files on your hard drive. If so, you need to add them to the Windows Media Player Library to access them with the Media Center.
To add music files that are stored in your My Music or Shared Music folder on your hard drive:
1 Click Start 
on the taskbar, and then click Windows Media Player.
2 Click the Media Library tab.
3 Select + Add on the menu bar and then select By Searching Computer. Click the arrow on the search or
4 Click Search. Windows Media Player searches the selected drives for all supported audio files and adds them to the Media Library.
If Windows Media Player does not recognize all of your audio files, try copying the files directly into Windows Media Player. Refer to Windows Media Player Help for more information.
Your music files can now be found and played in My Music window in the Media Center. You may need to close and open Media Center for the added music files to appear in My Music.
My Music 129