Saw this on digg. Despite the author self posting on digg, which makes me feel weird in the skull, there are a couple of good nuggets here. 1 and 2 are obvious, but 3 through 4 are good. I especially like 3, since I have a massive library and rarely browse it. Nice to be able to click on one of these arrows from my one of my podcast playlists to find the original item and delete it when I want to clean up some space.