I have just set up a pretty basic home theater system (5.1) in an addition we had built. Here are the components: Samsung HD ready DLP TV Yamaha RX-V2400 receiver Sony DVD/CD carousel 5/disk player Digital cable + HDTV converter box (Cox) All audio and video feeds into the receiver via component video cables & optical audio cables. Five speakers (two rear) and a sub. Everything is set up and seems to be working fine. Video looks great. My questions are about the surround sound system. There are a lot of settings available on this receiver (THX, TV Theater, DD/DTS …). How do I know I am getting the most out of the sound system when I: 1) play audio CD’s; 2) watch digital cable (HD and non HD); and 3) Watch DVDs? Since I’m new to home theater my surround sound audio experience is nil. Should the receiver automatically select the best sound settings depending on the source input? (It does not seem to be doing that.) I have played with the settings a bit but there are so many variables it could take me months to “test” all my audio setting options? I do know, for example, setting the audio to “5.1 surround” sounds great when I play a music CD. Are there some general guidelines here to get me started? Also, how do I get this receiver to stop displaying “zone 2” and “zone 3” in the display window? I don’t have any other zones connected. The manual is NO help here. Thanks in advance.