Windows Media Player automatically updates your libraries as necessary. However, you can manually update a library to make sure that it has links to files you have recently copied to your device or to a removable storage card.
Step 1
Tap Start, tap Programs, and then tap Windows Media.
Step 2
If you do not see the Library screen, tap Menu > Library.
Step 3
Tap Menu > Update Library.
Step 4
Wait for the files to be added, and then tap Done.
