Ok so I have rear output to my speakers as long as I'm using my computer but I have my tv connected to line in on my onboard sound card (headphone jack adapter from red/white) I understand its only going to be in stereo but is there any way to duplicate the sound in the front speakers to the back? If I use say vlc to stream line in it plays all 4 but there's about 1/2 second lag time between audio/video. Also I was looking at Creative - PCI Express Sound Blaster X-Fi Titanium Fatal1ty Professional Series Sound Card because it has optical in but will that clear up the lag time?