I have bought a set of 5.1 speakers. They are connected to an Asus Essence STX II sound card. I have 3 ways of connecting the speakers
1) Standard green, black and orange cables
2) Via s/pdif and choosing Dolby Digital Live
3) Via s/pdif and chossing PCM
Which one will be my best option out of the 3 of them? I play PC games, watch movies and listen to music.