One interesting thing is that in Red Hat based distributions the "run levels" configuration utility is chkconfig but in Ubuntu (Debian) the utility is sysv-rc-conf.
If you have mute sound problems in Quake III Arena, try using these commands as root, this one before playing the game:
echo "quake3.x86 0 0 direct" > /proc/asound/card0/pcm0p/oss
After exiting the game:
echo "quake3.x86 0 0 disable" > /proc/asound/card0/pcm0c/oss
Sound problems in Pidgin?
In the [ Preferences > Sounds > Method ] choose command and write on the Sound command text box:
That's it, try it now!