Advertisements I'm in the process of setting up a 5.1 home theater. I will have the digital optical from my TV, going into my AV Receiver. Is there any audio setting that I should change, on my Tivo? Also, how much content is broadcast in 5.1? Is it some channels, or more? And for a particular channel, is it all content on that channel, or only some? I've never had a 5.1 system before, nor really paid attention if I heard one before. I mostly watch sports. Is that content in 5.1 sometimes? Will I notice a difference, compared to my built-in TV speakers? Will it be better? I'll also watch a few TV shows or movies I record, but most content is sports.