This interview in SmartMoney is causing some controversy in various circles: Mel Karmazin, CEO of Sirius Satellite Radio, said in a short interview that he’d be interested in merging his company with XM Satellite Radio, his archrival and the market leader in the hotly competitive $1.5 billion industry.  “Mergers often lead to creating shareholder value…I’ve always been open to that.” He’d floated the idea at a trade conference that he’d like to buy XM, but he predicted there would be regulatory hurdles. He no longer thinks regulators would pose a problem. “If there’s an iPod with terrestrial radio, it’s hard to believe government is worried about two satellite radio companies combining,” he said.