Trying to enter kcontrol -> Sound&Multimedia -> Sound System I got the following error:

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The diagnostics is:
Library files for "libkcm_arts.la" not found in paths
Possible reasons:
An error occurred during your last KDE upgrade leaving an orphaned control module
You have old third party modules lying around.
Check these points carefully and try to remove the module mentioned in the error message. If this fails, consider contacting your distributor or packager.
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The system is Knoppix3.3/Debian testing.
Any ideas how to fix this error?


Thanx