I'm hoping one of you guys can help me out here... So I just got a new LG Google TV (GA7900) and per everything I've read the recommended setup to get the most out of the TV is to connect everything to the TV via HDMI and then output audio only via optical cable to a Dolby Digital capable receiver. So along I went connecting my Apple TV 2 and then my TiVo Premiere XL4 to my TV and then when I started testing everything I noticed that the TiVo was always outputting sound in 2 channel stereo sound and not Dolby Digital 5.1 to my receiver. I know it's not the TV because when I play stuff from Netflix from my Apple TV 2 (connected in the same way) it outputs sound in Dolby Digital 5.1 to my receiver via the optical output from my TV. Then to make sure I wasn't going insane, I tried connecting my TiVo directly to my receiver via HDMI and then I got Dolby Digital 5.1 sound back right away... I also tried connecting from TiVo directly to receiver via optical cable and also got 5.1 sound. Anyone know why I can't connect my TiVo to my TV and then output from my TV via optical cable to my receiver to receive Dolby Digital 5.1??? Any help or thoughts would be appreciated!