Hi, I'm really hoping someone can help with a problem I'm having with an Octava HDS4A-UK. I have it connected as follows: HDMI out from Sky+ to HDMI In 1 on the Octava Optical audio out from Sky+ to Optical In 1 on the Octava HDMI Out of Octava to HDMI In 1 on Samsung D8000 TV Optical Out of Octava to Optical In on Samsung HT-C6500 home cinema The problem is I get no audio out of the Samsung. Optical out of the Sky+ direct to the C6500 works fine, so I doubt it's an issue with cables etc. Video comes through the Octava fine - just not the audio. I've already sent the unit back to the supplier once and they've sent it back to me saying it's working perfectly, so I'm left scratching my head a bit. I've tried the usual unplugging everything and powering up in different sequences, and the Optical Out of the Octava is lit up red - so hoping someone cleverer than me can offer an opinion? Thanks!