I just got a new Hitachi 51S500 rptv, and am trying to get an analog stereo audio signal to it from my MyHD MDP-100. From what I know the only way to do this is to use a 3.5mm stereo plug to 2 rca cable, and a stereo plug extension cable. I gave this a try, and there is a constant humming noise in the background. I tried plugging this audio output from my computer into another TV, and there was no hum. Then I tried hooking up my mp3 player through all these cables, and there was also no hum. So this told me it wasn't the computer, the TV, or the cables...?? One other thing I noticed is that if I mute the main volume control on my computer, the noise is still there. Has anyone else had this problem. If so is there a way to fix it? Also is there another way to output an analog audio signal from a MyHD? Thanks.