I have a recent iMac and would like to have surround when game playing, both using OSX and Windows 7. I have a Creative 5.1 surround speaker system that is analog. I would like to use it if possible vs purchasing the Logitech $400 speaker system. It seems that each time I find a possible solution, it is outdated or has been discontinued. The possibilities I have researched are as follows; 1. Creative DDTS-100 decoder which has the 5.1 outputs and an optical input. Discontinued. 2. Tritton AX Pro surround headphone system which comes with a decoder that will connect to a 5.1 speaker system. This is also discontinued, but is more available. It should work on both the OSX and Windows side as it does the decoding. 3. Purchase a inexpensive home theater receiver and let it decode the surround and drive the current Creative speakers. 4. Griffin FireWave - The issue with this is that it is Mac only I believe. Any thoughts or ideas? I am hoping that I have just overlooked something. Thanks for taking the time to read and hopefully respond with some ideas.