Pointed out by Jo Shields <http://apebox.org>

Contributed by Jo Shields <http://apebox.org>

Finishes the goal of a membership-aware "Radio" plugin with simple branding and quick links to the Genre streams.

Now for someone to extend this towards a "full" Magnatune plugin with full album browsing, "Buy Album" and "Download Album" actions, and awesomeness.

This has the basic UI that I was looking for and with the simple hard-coded data I have a working test that should lead directly to a useful Magnatune "radio" plugin.