Bought a 2nd gen Appletv yesterday. I would like to stream music from my iMac to my home theater system. My home theater system is 14 years old and I do not wish to change it as it is a $15,000 custom system. I do not have an OPTICAL AUDIO port on my receiver that is connected to my TV. How do I stream music from my iMac to my receiver in this case? What are my options? Is there a backward compatible cable available? If the AppleTV does not serve the purpose of letting me stream music to my receiver, I will return it so based on this answer, I will be making a hard choice. Any ideas? I researched on the web without any answers.