Sound not work - change permissions?

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http://forums.opensuse.org – Sound is not working on my openSUSE 11.2 x64 desktop. It works as root, which means it is likely a permissions problem. I looked at SDB:AudioTroubleshooting STEP-6: How To Fix a Permissions Problem. The problem is that I am using windows kerberos authentication, which means users do not appear in my users list so I can't add anyone to the audio group (or any other group for that matter, at least that I have been able to find). So the workaround in the link does not help me. Is there a way to change the permissions on the other end? That is, can I force the sound card to accept input from ordinary users who are not part of the audio group? (Distributions)