Can I get surround sound when watching IPTV. Sound presently coming from tv speakers. Tv is connected to a Sony system. No sound when IPTV and tv are on. Surround sound comes on tv when IPTV is shut. Sony speakers are connected by red and white cables. Sony is connected to tv by hdmi cable. There is a audio out switch on tv not used. IPTV has Av and rc connectors not used, and a SPDIF CONNECTER. IPTV connected by hdmi to tv