Hi MrUnHappy2,
I had the TV360 connected to my TV and the sound connected from the TV to my Sony amp using optical cable, it was connected like this because the Samsung TV had adjustable audio delay, the Sony is sync on or off only, this is how it was connected to the Tivo V6 and worked OK.
To cure the sync problem with the 360 box I connected the 360 to the Sony amp just using HDMI no optical cable, and then Sony amp to TV. Settings are follow content and 0 delay on the 360 and on the Sony amp sync set to on.
This seems to working for me, hope you get your system sorted out.