How do I clear a music entry from Windows Media Player 12?

This is in Windows 7. The music was recorded in Itunes and automatically imported into Windows Media Player 12, so that it showed up there under Artist and Album views for music. The music was removed from the Itunes folder physically (file thrown out) and Itunes was uninstalled, but the old, and now unusable, reference to the artist and album won’t allow me to delete it from Media Player 12 in the most common way: to right click it and choose delete. I tried to “Turn off” media player as a Windows component in control panel, but this action didn’t help either. I’d be OK with removing media player altogether and reinstalling it in Windows 7 if I thought it would work. But I haven’t found how to do that.