digital audio

Hi guys, When it comes to sound quality, I've realized there're freaking many factors could affect it, some say the DAC is the paramount thing to be taken care of; some say the speakers are the real crucial part, given that you hear all the sounds from them, there's no certain right or wrong...

Hi Folks please can someone help regarding digital audio output on my MB. The Audio device is Realtek hd audio, plugged into my A/V receiver via optical toslink lead. I have a 7.1 speaker setup. My receiver detects a digital audio signal, as I have tested movies. But if I try and play RE2...