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Satellite has been called the Great Hope for radio: A medium with whole channels devoted to swing jazz, baroque classics, and African pop. But such niche channels have disappeared from XM and Sirius, and some experts are saying that may be connected to the huge financial losses that the rival satellite services are reporting. Today, Marc Fisher, a reporter for the Washington Post, compares the two services and explains how they're locked in a head-to-head battle. Also: gypsy jazz guitarist Stephane Wrembel performs live songs from his new album, "Gypsy Rumble."