I just Googled this Question and I found an answer in another forum. I downloaded an app called Cover Art Downloader. It's Free in the Google Play Store and works pretty good. I couldn't find All my album art, but it got about 85% of them itself and the ones it didn't you can search for manually in the app. I still wasn't able to get art for everything, but got most covered. It's a good app, my want to try it.