First of all, I'm sorry for my English, I'm from Austria.
It's a long story, but I hope you will understand my problem.

I've wanted to run TeamSpeak on my Knoppix, but when I connect to the server, my headset & microphone is muted and I can't turn them on.
It seems they are disabled for the program.
So I thought it has to do with the sound card and maybe with the control center (Sound System).
I've tested the sound configuration tool in the 'Knoppix' menu item. It doesn't work, because of this error:
You don't seem to be running a kernel with modular sound enabled.(soundcore.o was not found in the module search path). To use sndconfig, you must be running a kernel with modular sound, such as the kernel shipped with Debian GNU/Linux or a 2.2 kernel, and sound must be compiled as modules.
I've also tried to turn the Sound System on, but when I do that, this message appears:
Sound server informational message:

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.
Then I've searched in this forum for the problem and I found a thread dealing with turning the soundsystem on.

Someone has written following:
First, boot 'knoppix alsa' to make sure you are using alsa and not oss.
These are the sound modules in the kernel, oss is obsolete.
If you are installed to HD, edit the 'append=' line in /etc/lilo.conf adding 'alsa' to the list then re run lilo.

Then, try the sound configuration tool in the 'Knoppix' menu item.

Make sure your Kmix volume settings are turned up, you need at least master and PCM turned up.

Go to KDE control center -> sound system & enable the sound system.

Go to KDE control center -> system notifications & turn on all event sounds.

Then you have to edit the hidden file /home/(username)/.kde/share/config/knotifyrc & change all three settings to 'true'.

Code:
Code:
[Misc]
 LastConfiguredApp=The KDE Window Manager
 
 [StartProgress]
 Arts Init=true
 KNotify Init=true
 Use Arts=true

It is a hidden file, to find it set konqueror to view hidden files then edit it with Kate or Kwrite.

Why kde doesn't do this automatically when enabling system sounds is a mystery to me but it doesn't.

You should now have system beeps & whistles.
The first thing worked. After that I edited the "lilo.conf".
But when I try to run "lilo", this comes out:
/proc/misc: No entry for device-mapper found
Is device-mapper driver missing from kernel?
/dev/mapper/control: open failed: No such device
Failure to communicate with kernel device-mapper driver.
/proc/misc: No entry for device-mapper found
Is device-mapper driver missing from kernel?
/dev/mapper/control: open failed: No such device
Failure to communicate with kernel device-mapper driver.
Incompatible libdevmapper 1.01.03 (2005-06-13)(compat) and kernel driver
Warning: '/proc/partitions' does not match '/dev' directory structure.
Name change: '/dev/cloop0' -> '/dev/cloop'
Fatal: Trying to map files from unnamed device 0x000e (NFS/RAID mirror down ?)
Please help me T_T