I have a home theater of philips with 5.1 surround speaker.Now i am connecting my pc with the home theater with a 3.5 mm stereo jack in home theater's AUXULARRY mode.When i am playing a 5.1 version i am not getting voice sound through my home theater,i am just listening the background sound.In the stereo mode i am getting complete sound effect.How will i get complete 5.1 surround sound effect with this system?????