Hi. I have several questions. I would appreciate any and all info and/or links. Thanks in advance. Fred 1. I am currently using the A/V connection on my DVD player to connect audio. My DVD player and my receiver both have coaxial and optical digital jacks. Could you link to the basics of what these are all about and whether or not there will be significant improvement if I use them. 2. I need a few component video cables and a component video switch. I also need a couple s-video cables and a couple a/v cables. Which website(s) do you recommend to buy these items?