RealNetworks has filed a $1 billion anti-trust action against Microsoft Corp., charging that the technology giant is attempting to monopolize the digital media space. In a suit filed yesterday in fede

RealNetworks has filed a $1 billion anti-trust action against Microsoft Corp., charging that the technology giant is attempting to monopolize the digital media space. In a suit filed yesterday in federal court in San Jose, Calif., Real alleges that Microsoft has used its power to restrict how PC makers install competing media players.