Thank you for your help gentlemen. I have bought the RCA to Scart converter and connected to the 7-40 in AV2. Added the A-V button to the Beo 4. The Sonos has been designated as V.Aux (as the choices seem limited to that or V.Aux(STB)/Decoder/V.Aux2 or what I have used). Unfortunately, still no sound. I have managed to get it to play using RCA to RCA

Thanks for your help AV1 (Scart) - nothing AV2 (Scart) - nothing V Aux Sonos Connect A1 digital input - V.AUX AV3 (scart) Sky Digital STB DTV DVI-I - Scart for audio input - DTV AV4 PC Sony PS3 Composite Y-Pb-Pr R L (later two being audio input) - PC There is no AV5 but the sockets for temporary connections are unused DVD is via the built in DVD player

I am trying to connect a Sonos Connect (ZP90) to my 7-40 1st generation which has full surround speakers attached. The AV4 is occupied by a PS3 connecting via cponent vido cable. The Sonos is plugged into the A2 coax digital input and the source is set to V Aux. I am getting no sound at all. What am I doing wrong