Use the two phono cables that are attached to the video cable assuming those phono inputs are associated with the DVI connection. Either that or if you have a surround sound amp you can use a digital optical cable.
I have a dvi to HDMI adapter so the video will work.
So has the HDMI lead you get with the elite have two phono sound outputs as well.
The phono inputs are for sound.
The Elite comes with a seperate "sound block" adapter that you plug into the old style AV port if you need external audio.