Xm Satellite Radio Holdings Inc

In a once-abandoned printing factory that used to churn out National Geographic magazines, 82 immaculate, gleaming radio studios stand at near-silent attention, waiting for a master switch to be thrown in late summer. XM Satellite Radio Holdings Inc. is gearing up to go on the air in a big way: 100 channels of digital music and talk radio beamed to your car, broadcasting everything from rock, pop and country to news, comedy and evangelical programming.