I looks like there's an empty viewport which sits on top of the album art.
Try commenting out all the viewports, and adding them back in one by one, to see if you can identify one of them that's causing the problem...
EDIT: You have a blank line in the last viewport (which sits exactly on top of the album art). Get rid of this viewport, because it's not doing you any good, anyway. Make sure you don't have a trailing blank line, and that might fix it? Worth a try.