How do you stop OSS, Artsd, Gnome sound etc from Jumping all over each other?

[James McDonald]

I have a mdk 9.0 box... sometimes when I use xmms I get the following

    ** WARNING **: oss_open(): Failed to open audio device (/dev/dsp): 
Resource temporarily unavailable

It looks as though it's due to another sound server monopolizing /dev/dsp...

How do you get them all to play happily or at least exit properly when 
they are done and not keep a lock on /dev/dsp?

Thanks
james