Quick Look for album art, station in window title, misc cleanups

Probably best demonstrated by a screenshot.

![example](https://f.cloud.github.com/assets/68303/1065968/482e2d40-13a6-11e3-996a-d86ace7d5e6c.png)

Some of the UI changes are pretty subjective so I certainly don't mind if you don't take them; they just look better to *me*.