I have an xp pc running media centre 2005 connected to my tv via a dvi to hdmi adapter and then the hdmi cable straight into the hdmi/dvi port on my lcd tv.

I have two tv cards installed in my pc, one is digital and one is analogue. I have connected a s-video cable from my sky hd box to the s-video on one of the tv cards as i want to be able to record sky on my pc hardrive.

I then have a red and white audio cable connected to the line out on my pc and at the other end the cable is a headphone jack which plugs into the back of my tv which says sound for hdmi/input.

I have sound from my pc through the tv and when i load up media centre i hear all the sounds. I can also listen to music and watch films through media centre with sound but when i go to live tv where I can see my sky channels i have no sound at all.

On my tv card i also have a red and white and yellow connection. At the moment i have a red and white cable connected from the tv card to a line in on my pc. Is this correct ? or do i not need this and having the cable from the line out to my tv sufficient.

Can anyone help with this as I have been trying for hours and still cant get sound on live tv.