Sound Problem

[Greg Foster <gfoster9055 comcast net>]

Sorry about being vague and I apologize, like I said I am new to Linux

I will do my best to explain in detail.

I am running Debian(sarge) kernel 2.6.8-2-k7

I can stream music and play mp3 only from xmms only, others appear to 
work but no sound comes out. Other players that I have tried are:

noatun
Kaboodle
music player
gnome-cd
juk

Error I get from some programs is:
Error while initializing the sound driver:
device /dev/dsp can't be opened (No such device)
The sound server will continue, using the null output device

I tried to install the drivers from nvidia and I get this error:

ERROR: Unable to load the kernel module 'nvsound.o'.  This is most 
likely because the kernel module was built using the wrong kernel source 
files.  Please make sure you have installed the kernel source files for 
your kernel; on Red Hat Linux systems, for example, be sure you have the 
'kernel-source' rpm installed.  If you know the correct kernel source 
files are installed, you may specify the kernel source path with the 
'--kernel-source-path' commandline option.

The I checked to make sure the correct kernel source is installed

What I meant by system sounds are the beeps, sounds from installed games 
etc... which don't work or when I get them to work it always freeze X.

When trying to play a dvd, sound does not play through that either.

Sorry about the KDS yes I did mean KDE.

I am not so much worried about getting the 6 speakers working as I am 
just getting the sound issue worked out.

I also tried to disable aRts with no luck (same problem)

Thanks for you patients and you time to help me out
and I hope his is a little better.