Config problems mostly solved

Update to my post on the configuration problems with my new machine: I have sound. I had some problems with the sound quality in XMMS, but that is probably just a case of XMMS not liking some sound cards. When I play the same music files in Kafeine, all is well (although Kafeine’s interface is not so nice for managing sound files).
I have tried to configure a cheap scanner I got from my aunt, but no luck with that just yet. It should work, it’s in the compatibility lists as a fully supported scanner, but somehow it doesn’t.