So I have the newest Mac Mini that I am using as a HTPC. I purchased a tos-link cable from monoprice to route the sound into my Denon receiver and then I would have surround sound. Thing is, I have done everything but it won't work. It does show the red light at the end of the cable. I have also tried a normal stereo cable to see if the port is bad and it works, but obviously I don't have the 5.1 surround sound. Any ideas?