If you've checked into Rdio's website this afternoon (and are a web or unlimited subscriber) you've probably noticed a message prompting you to try out the "new Rdio." Clicking on it will take you to the redesigned website that the music streaming service has rolled out today -- something the company claims is "faster, simpler, and more social." That includes a completely overhauled layout that puts it slightly more in line with the likes of Spotify and iTunes, and social networking features that are brought to the fore, including a new "People Sidebar" where you can see who's online and what they're listening too (along with suggestions of people to follow). You