During today's earnings call, Pandora CFO Mike Herring said the company will again allow unlimited listening via mobile devices, eliminating its recently implemented monthly cap. First introduced in February, Pandora's 40-hour per month limit was put in place as a direct result of increased royalty rates. While desktop Pandora listeners were able to listen to unlimited music, mobile users that exceeded 40 hours had to subscribe to the Pandora One service at $36/year or pay a small fee. According to Herring, both increased advertising income and and