Happy to help and hopefully it won't be confusing. Option 1 in my previous post is just as stated. You add the stereo preamp to your current system. All speakers stay connected just as they are now. Currently the front preouts on the Yamaha are connected to the B&K. To insert the stereo preamp, you would connect Yamaha front preouts to the bypass input on the preamp, and the output of the preamp to the B&K. Then the CD player would connect to an input on the stereo preamp. To play CD's you would only use the stereo preamp, B&K, and front L & R speakers. As I said in the previous post this is stereo only. For movies, you use everything, and select bypass on the stereo preamp, then the system operates just as it does currently. Here is what the back of the stereo preamp would look like,
http://public.jolida.com/models/fusion%20pre-amplifier5.jpg
Questions? Just trying to make sure you understand since you said, "so confusing". Again, assuming this is the direction you want to go, what are all the sources you use for music listening? Do you want new or is used OK? Would you prefer solid state or do you want to try tubes?