Cause Windows Media Player contains something called Media Library that holds audio and video media. This feature enables you to add music and video clips that you want to keep and view in the library so that they are available anytime you want to hear or see them. You can copy CD music and video clips to your computer's hard drive and then place them in the Media Library. Then, you simply click on the item in Windows Media Player to play it, instead of having to have the actual CD handy.
In order to add music or video to the library, that music must be stored on your hard drive. In other words, you cannot play a CD and add it to your library without first copying the CD to your hard drive. Then, you can add it, as explained in the following Pain Killer.
The Pain Killer To add a CD to Media Library, follow these steps:
1. Use the Rip feature to copy the CD to your hard drive.
2. In Media Library, expand the All Music category and select Album. Then, click the Add to Library button, which looks like a plus sign (+), located at the bottom of the Media Player window. From the pop-up menu that appears, select Add File or Playlist. In the Shared Music folder that appears, select the desired album or browse to the location of the copied CD. When you find the file you are looking for, select it and click Open. The new album now appears in the Media Library.
http://tech.yahoo.com/gd/windows-xp-media-player-headaches-i-can-t-add-cd-music-to-media-library-/3191;_ylt=Ap4I3lEBQsgALCx6gP852c0SLpA5
