I go to "open volumecontrol", and choose output.
Then I have three choices:
1. dmix:0
2. Internal Audio Analog Stereo
3. Internal Audio Digital Stereo (IEC95

I want it to be nr. 2, so I set a mark on nr. 2, and everything works as I want it to.
But, when I restart the computer, the mark has jumped down to nr. 3.

Why does this happen? I want it to always be on nr. 2, not nr. 3.