nimajiman: I do not think you need to re-install everything.
If you read the following thread:
openSUSE problems - a short list - openSUSE Forums
You will see the steps I went through:
1. Remove VLAN repository and keep packman only
2. Set alsa instead of automatic in the audio properties (I'm using Gnome)
3. Set VLC to OSS, everything else is set more or less to ALSA, with the exception of Realplyer, which you may want to download and install version 11 anyway - version 11 uses Alsa.