Now that the nation’s only two satellite radio companies have completed their merger, people are wondering what exactly the newly christened Sirius XM Radio will sound like — and who’ll be making those sounds. Crunchgear, for example, asks if the company will renew the contract of XM shock jocks Opie & Anthony now that they’re colleagues of Sirius’ multi-million-dollar mouth, Howard Stern (pictured to the left). On that point, Mel Karmazin, the chief executive of Sirius XM Radio, had little to say when he went on the Opie & Anthony show today, according to Crunchgear, which nevertheless viewed the appearance as a move to reassure the duo’s fans