The sound is not high quality !!!

laptop acer extensa 5220
sound card high definition
:suse 11.1

when iam play music on suse either banshee or another music player the sound seems very poor with kind of confusion not that high quality like when iam on windows

What do you suggest to solve the problem?
Thanks for help

SDB:AudioTroubleshooting - openSUSE

Make sure you have eveything multi-media setup properly
Multi-media and Restricted Format Installation Guide - openSUSE Forums

Amarok is probably the best music player around. Get it from Packman