Avago-Earo wrote:....Well. My GPU (GT 740 Super Clocked -yeah I know I'm saving for a 'real' one) has 5.1 sound over HDMI, but given the age of my TV (7 year old 32" Panasonic 1080p still amazing picture though) it doesn't support the newer sound signal on HDMI so it dithers down to 2.1. (Jeez this is long winded, get on with it!)
According to the device on the link at the bottom, I should be able to plug the GPU's HDMI into the audio extractor and the HDMI out into the TV then the 5.1 audio is routed to the optical out into my 5.1 amp's optical in and viola! sorted!.....
Don't try running it through your tv first, this will only downscale your signal.
Try running the hdmi straight from your gt740 to the magic box, and from there to your amp. I'm assuming your amp doesn't have hdmi, right?