The unlimited, on-demand social music service from the creators of Skype, today announced it is one of the first music services to launch on Facebook’s new music platform. With the integration of Rdio on Facebook, Facebook users now have an additional and established platform to share their musical tastes with their friends, regardless of whether or not those friends have an Rdio account. The announcement took place today in San Francisco at f8, Facebook’s annual developer conference, during the unveiling of the company’s much anticipated music platform.