(small excerpt from an article on XM-Sirius)
Sirius XM is in a tight spot. The merger was long and costly, both companies have shelled out extraordinary amounts of money to secure personalities like Howard Stern (who cost $500 million alone), and the credit crunch has dealt a blow to the most lucrative base of new satellite radio subscribers--car buyers. Sirius XM also has to refinance about $1 billion in debt, something else that won't be easy considering the volatile market.
Karmazin, a veteran of Viacom and CBS (which publishes CNET News), joined Sirius pre-merger in 2004, and acknowledged that he was brought onboard to accomplish a very difficult task of making the company profitable.