I don't think you can. HDCD was from Pacific MicroSonics if I remember the name of the company correctly. Microsoft bought Pacific MicroSonics (thus getting the patent for HDCD) and effectively killed HDCD as it was competition for a MS product. As with so many things MS, their competing product was actually inferior and MS has done nothing with HDCD or their own product; killed a good thing. You might contact MS about licensing HDCD but if they will license it, be prepared to pay$$$.