when yo go to your pictures hub, the backgrounds album does not show in there, the only way to see what's inside is via the lock screen menu, is there a way to enable that album to show in the picture hub?
are you talking about the "official wallpapers"? if so, you can't. I was able to mimic that album by taking a screenshot of each of those wallpapers (you have to crop them) then creating a album in SkyDrive. Problem solved.