Hi, I have this monitor: http://www.asus.com/...#specifications The specs show an SPDIF out and is supposed to pass the digital signal through as long as it is connected via the HDMI cable. The problem is, however, when I connect it to my 5.1 digital speaker system, which has a built in decoder, it shows that the digital signal is not being passed through the SPDIF output on the monitor. I have also tried turning off the 5.1 decoder to see if the signal is already being processed, to no avail. Is anyone familiar with this monitor or this situation and can offer me some help? Thanks very much!