I found this a bit of a nightmare. Its the sound you see. You can get a picture using the S-Video, or a VGA to HDMI cable, but is getting the sound right. Sometimes the phono lead inputs do not correspond with any of the other sound inputs.
Check out
www.cabling4less.co.uk much much much cheaper than the local electronics store.
EDIT!!! Get a Scart to 3 phono adapter, and Svideo lead, and a 3.5mm jack to phono lead and job done, again, all form the above. About £11 all in.