I ran into a similar problem a few years ago when I got a 7.1 home theater for my PC. Eventually, I realized that the only way to get sound into the receiver fr

I ran into a similar problem a few years ago when I got a 7.1 home theater for my PC. Eventually, I realized that the only way to get sound into the receiver from the PC was HDMI. I also needed to have visual data coming into it for the sound to work, so I duplicated a screen to it, and keep the screen connected to it off most of the time. I've wondered why receivers don't support USB input from PC. Sure, there's lots of receivers that have USB input support, but that's because you can play MP3s off a flash drive.