OK I completely screwed up at the weekend, and bought a new sound card for my computer that doesn't do what I need it to do.
It works great - and is a massive improvement over my older Audigy card.
I bought it in person from overclockers ( http://www.overclockers.co.uk/showproduct.php?prodid=SC-055-CL&groupid=701&catid=11&subcat=
) so cannot return it.
I paid £64.39 inc VAT for it, and it is brand spanking new. It's OEM but will be well packed. No drivers required for Vista and above - just plug in and get 7.1 sound, optical in and out, and the rest.
Will do someone a deal but will put £60 as asking price.