In order to make customization on Windows Media Player 12 Library you should have Windows Media Player Background Image Changer with you. Which can be downloaded here. Unzip and start application.

To change library background into your desired image follow steps:
1.Select Custom button.
2.Click Browse and select a PNG Image.
3.Click Apply button.
You can also switch through other available images.
For more information about this tool visit : link









