You got one of those nice HP nx5000 with SUSE 9.1 preinstalled at aKademy? You were annoyed because the stupid intel chipsets could not handle mixing and the sound device was permanently busy? No more!
Simply place the following code into your home directory as ~/.asoundrc, restart artsd and enjoy your newly-gained software-mixing.
If you need more help, you might want to take a look at this very helpful page which I derived my configuration from. you can now happily use JuK, amaroK, Kaffeine and mplayer aside for the full monty of multimedia expirience.