Groove doesn't recognize album, artist or art when it adds music.

I've got a new Surface Pro 4 that came with Groove. When I pointed it to my local music folder, it added each wav music track but not the album title, artist or artwork.  How can I edit that information?  How can I import local music so that album, artist and art appears?  Finally, is there a way to update album info without signing into Microsoft?  I must use a local account with Windows 10.