Samsung SWA 3000 Hi-Fi Surround Sound £49.98 reduced from £99.98 available for reserve & collect or free home delivery if you're lucky.
Seems a bargain to me, next cheapest on Froogle was over £70
This product eliminates the need to run wires to the back of your room as it's a wireless rear channel amplifier. It receives the rear-channel audio signals wirelessly from your system's main unit. All you have to do is connect your two (current) rear speakers to the unit and you can enjoy full surround sound - without the wires running from your system's main unit to the back of the room. (10m wireless range)
Compatible only with the following Samsung Home Cinema Systems:- HT-THX22, HT-THX25, HT-Q20, HT-XQ100, HT-TX35R, HT-X250R, HT-TXQ120R, HT-X30R
The promo code YAW935 (valid for April) should also bring it down 5% to £47.48ish
Don't forget 3 or 3.5% Quidco too (to make it £46ish)