Sirius Satellite Radio says holiday sales helped push its subscriber base over the 1 million mark, while rival XM Satellite Radio reports its customer numbers have topped 3.1 million.
New York-based Sirius and Washington, DC-based XM are the two main players in the emerging U.S. satellite radio business.
Sirius recently signed shock jock Howard Stern under a five-year, “multi-million dollar” contract and hired Viacom Latest News about Viacom veteran Mel Karmazin as its chief executive.







