What is the difference between an entry level QED scart cable and an RGB one like this: http://www.empiredirect.co.uk/productdetailsnew.asp?modelcode=QED-AV4110 ? Why is it 'no audio transmission'. Basically can I still get RGB through a decent quality scart without it having to be 'specialised' like this? Apologies to Groundy (who's been a great help) for re-iterating myself! Thanks!