Unlock /dev/dsp?

[Dominic Fandrey]

Andreas Davour wrote:
> 
> I have begin to find it annoying that when I have a Firefox running with 
> a page with a youtube link it it, I can't at the same time play a mp3 
> file with mplayer. When I try I get an error saying that /dev/dsp is 
> busy. Is there a way to make it play me some music anyway?
> 
> I use KDE if that matters.
> 
> /andreas
> 

You want to read chapter 7.2.3 of the handbook.