You can also replace an existing cover using the app.
I did a fare amount of research on the topic and everyone was fairly consistent in the approach, uninstall Xbox Music and then reinstall it, play with Windows Media player and its cache and hey presto, you have some more album art.
Adding album art is really easy, you just drag and drop an image file into the album art slot.
It seemed to work fine because the artwork shows up in the MP3Tag program, so I didn’t there was a problem until I viewed the files in Windows Explorer.
The scanning and importing of images is quick and is applied to the entire album at once.
If Cover Art Downloader was not able to fetch your covers automatically, you can search images for individual albums or artists using specific keywords.