Hello! I'm fairly new to the 5.1 HT world and have a couple questions about my set-up. I have a Yamaha 5760 powering a mix of Mirage and Def Tech speakers. Whenever I watch movies, I select the 5.1 Dolby Digital or DTS option on the DVD and everything is good!

When browsing through my receiver manual, I came across, "Connecting to the MUTLI CH INPUT jacks" section. It talks about how the receiver is equipped with 8 additional input jack for discrete multi-channel input from a multi-format player, external decoder, sound processor, or pre-amp.

Here are my questions-

*What is the difference between MULTI CH INPUT and just selecting DD or DTS through the DVD options?
*Should I be using the MULTI CH INPUT option?
*Is a multi-format player, my DVD player (since I know I don't have the others)?
*What type of wiring is required for this?

Thanks a bunch!
Eric