EarthLink, Apple’s exclusive North American ISP partner, has teamed up with RadioCentral to launch EarthLink Radio, a new service that allows users to listen to “the same popular music found on many of America’s top radio stations.” The service requires no proprietary software and functions directly in a browser — provided you’re running Windows. At present, there is no Mac support, although RadioCentral says it is “working hard” to support all operating systems in the future.