Shares of XM Satellite Radio (NASDAQ:XMSR) and Sirius (NASDAQ:SIRI) have each fallen more than 30% over the last 12 months. Will a merger really matter for investors, or is it too little, too late? In this installment of "Fool Video," Motley Fool senior analyst Rick Munarriz gives his take and explains why the bears may have it wrong.  

 More Fool fare: