I have my computer hooked up to my receiver and I am getting some feedback when I select the input (the one that my computer is one) from the receiver. The noise is a loud, constant hum. Here is how everything is hooked up: I have a minijack out on my soundcard. I have a short cord going from that to a 25 foot extension cable. The extension cable terminates in standard red/white RCA plugs. My receiver is a Pioneer VSX-D850s. I had this hooked up before at our old apartment and it worked fine. I have not changed anything this time. I'm assuming that it has something to do with the powere here, although I haven't had any problems with any of my other equipment.