Well, it is a fresh install. I believe lenny (or etch), anyway it is the latest stable release, of that I am sure, nbecause I checked it earlier.
The problem did always occur since I have installed debian. I have not upgraded or updated rhythmbox. Just fresh form the install. Howvere I know that the sound card did work, because I got it from an older debian machine, that I have used. I also disabled the onboard sound, so those drivers aren't loaded anymore. I did this by adding the drivers to the blacklist.
Also I already moved the home dir, so it needs to make a new standard profile, but that didn't work...
However I am glad to see error messages. What does it mean?