ALSA, OSS, ARTS, ESD, GStreamer all sound different.
As I sit here listening to "June" off of Camper Van Behtoven's Key Lime Pie album, I have noticed the following. In XMMS (and any audio application for that matter), files sound different depending on which audio output driver I use. OSS Sounds different than ALSA. ARTS sounds different than ESD. ARTS on ALSA sounds different than ARTS on OSS. ALSA w/dmix sounds different than ALSA wo/dmix, and so on....
So the question is... Why is this? Digital audio stays digital all the way to the DAC, why would one delivery method differ in fidelity from another? It appears that straight ALSA offers the best fidelity of all the options.
Thank you for your time,