first, geert is my account, fill in yours.
log in as root
open a console, CTRL+ALT+F1 or just a terminally emulator.
you will be asked for the root password (given during install, now you can do everything on the system
addgroup is the default command to make a group.
So you want add audio, just type:
there is a chance that it exists, so don't it is a kind of error when it does not work
next add yourself to the audio.
. I prefer nano, you can take vi or emacs or anything that can edit text. (you must be root, so in X you must be logged in as root if you want to that with kate or kedit)
now add yourself to the line in which stands audio.
audio:root,geert ==edited== (there might be ; as I am at school right now using M$)
also you might be already added to the group
open with your preferred editor /etc/rc.local and add to the last line:
chgrp audio /dev/dsp /dev/???
=>I don't know anymore.
chown geert path/to/arts
(so first find arts with whereis,find or locate, "whereis arts"
at the command line)
now you should restart your kde or just reboot
hope this helped. If something isn't clear just ask.