New York--Accenture and Sony Corp., Tokyo, are forming a stand-alone consultancy that will aid media companies in developing digital content. San Francisco-based Concadia Solutions L.L.C. will offer software and digital media platforms, as well as related consulting services. Sony will provide the video and broadcast expertise, and Accenture will provide consulting and re-engineering services. Concadia has tapped Norm Rickeman, formerly a partner in Accenture's media and entertainment group, as acting president.