I have a HD 6700 card and two hdmi cables, one to the monitor and one to the TV. When i connect the second screen, either the TV or the LCD I get a message box: HDMI to DVI notification; In order to hear audio on your HDMI based TV or display, you will need to have a separete audio connection from your computer to your TV or audio equipment.
Sorry, but thats wrong, I would only need the hdmi cable if the "driver" would let the sound through. (as it does with only one of them connected)
Why does it nag me about dvi connection, it is not, it is a hdmi connection both of them.