No sound when reading a DVD with VLC

I am using OpenSuse 11.2 (64 bits) with KDE 4.3.1. I added the Packman repository for OpenSuse 11.2 then installed VLC 1.0.3 with Yast. When VLC reads a DVD, sometimes there is no sound (it depends on the DVD) but video is OK. The following errors (in french) are displayed when VLC begins to read the DVD :

La lecture du fichier a échoué :
VLC n’a pas pu ouvrir le fichier « %U ».
Votre média d’entrée ne peut être ouvert:
VLC ne peut pas ouvrir « %U ». Vérifiez les messages pour plus de détails.

Thanks for your help, best regards.

Have you followed this
Multi-media and Restricted Format Installation Guide - openSUSE Forums

You’re wonderful !! I have done exactly what is described in the linked guide and now it works correctly ! Thanks very much for your answer.

You are welcome;)