OK so I've been trying to figure this out for months! I need help!! so I have a bunch of sources like a blu ray player, game consoles and DVD player all digitally hooked up to a digital AV switch (with Toslink optical cable)
The switch outputs to an optical cable, into my PC's Auzentech Xfi-Prelude and my 7.1 surround sound PC speakers play the sound....
problems though .... all I ever get is Pro-Logic and stereo upmix, even when the blu-ray player wants to output DTS I can't use it. I want to know if the Switch (Joytech JS965C AV swich) supports DTS or AC3 Pass-through? and if my Auzentech Xfi-Prelude can input DTS and 5.1?

or if I can just get some sort of external decoder and hook it up to my speakers directly and get DTS decoding that way??
HELLLLP!!