I got my Wiim Ultra this week and am loving it. It’s been working nicely so far, save for some issues with artwork not showing on a couple of albums. Upon checking the files on my USB, there’s a folder called “wiim cache” and inside is a folder marked “art cache”. True enough, the albums with the missing artwork are not in this folder. Is there a program to attach album art for these albums? Thanks in advance for your replies.