Fedora 4 - GNOME Sound

[asos_mike]

I'm on Fedora 4, GNOME. I have modified my /etc/asound.conf file to:
pcm.!default {
type plug
slave.pcm "swmixer"
}

pcm.swmixer {
type dmix
ipc_key 1234
slave {
pcm "hw:0,0"
period_time 0
period_size 1024
buffer_size 4096
rate 44100
}
}

The problem is when I open gstreamer-properties and test ESD (while running music but it should still work because its supposed to be mixing):
ALSA lib pcm_dmix.c:811snd_pcm_dmix_open) unable to open slave

Help would be much appreciated.