Memo to music labels: The “value” of music is defined by consumers, fans, and listeners, not by you and your minions. From Billboard: A renewed focus on the value of music comes as a transition point for the record business. Rob Wells, Universal Music Group’s president of digital who brokered deals with “freemium” services like Spotify, left the company in late February. Now the company is rethinking the value of unlimited free streaming, according to a label source. At the s