So I got a GTX460 and plugged it into my TV via HDMI and noticed it automatically passes audio. What exactly is going on under the hood? I figured I'd have to run a line to the GPU from my SPU or something. There are anomalies present, though. While both the TV and Windows are set to stereo sound, I've noticed that games seems to think I am running 5.1: sounds in front or behind me are muted and hard to hear, while left/right audio plays as normal. Also, Team Fortress 2 inexplicably passes NO audio through HDMI UNLESS I go into audio options and change the audio output from stereo to headphones/5.1/4 channel and back again. TF2 continues to pass audio through my Auzen Prelude's 3.5mm jacks, EVEN AFTER I've disabled the prelude from Windows' audio configuration.