I have a HP Desktop with Win7 . It has two DVI monitor ports. The first port , I used to my HP hdmi Monitor. The 2nd Dvi port has a Dvi to hdmi adapter connected to a hdmi cable to my Sony xbr Tv. Both monitors/TV have a perfect image. BUT I'm not getting any sound to the 2nd monitor/TV. both are using a hdmi cable. How do I get sound to both? THANKS!