Originally Posted by lszilveszter
so the asus xonar dg doesn't know dolby..???
I taught that if a sound card is 5.1...thats dolby sorund...oh man...:| this was a big mistake than ....
No, it does do Dolby on pre-encoded material such as DVD's, Bluray DVD and certain movie files recorded in DD using a digital cable in SPDIF-output mode.
Normal files, like MP3s, movie files and games tend to be recorded in PCM Stereo not Dolby Digital hence why you'll never get Dolby from them without encoding and up mixing them with a certified Dolby Digital Live soundcard.
Also, 5.1 just means 5 speakers and a subwoofer, it doesn't mean Dolby Digital. Dolby Digital can be had in 2.0 as well, it's just a patented of audio produced by Dolby Laboratories which features predominately on DVD soundtracks.