XM Radio, Washington, D.C., having launched its two broadcast satellites "Rock" and "Roll" in the spring, initiated the first U.S. digital satellite radio service in Dallas/Ft. Worth and San Diego. Within two months service extended across the U.S.
"The initial lineup includes 71 music channels and 29 other channels consisting of sports, talk, children's programming, entertainment and news." (quoted from Wikipedia article on XM Satellite Radio.)
The original launch date of September 12 was pushed back after the 9/11 attacks.