My dad is trying to hook up a mixer to a surround sound receiver with a distance of 200 feet, while using the least cables possible. He has an Onyx 1620 from which the signal will be sent to a Denon AVR 2807. He has the optional firewire cord, but the Denon surround sound reciever does not have a Firewire input. There are other surround sound recievers with Firewire input, but these are $4k, and we would like to find an alternative. Are there any good Firewire to analog converters out there? I have found a lot that convert Firewire video, but none that convert Firewire audio. Also, since the Onyx has only a Firewire 400 (6-pin) output, would we have to use a FW400-FW800 adaptor to let the signal travel 200 feet? (FW400 has a limit of about 5 Meters, and FW800 has a limit of 100 Meters...right? Correct me if I am wrong.) Or, is firewire the best way to do this? The speaker sytem is basically like a movie theater, but he is using a mixer with CD, and Microphone inputs.