Crackling / Glitch Sound Output

I’ve installed openSUSE 11. I’ve got a Asus M3N78-EMH HDMI motherboard with onboard surround. I left all drivers as the setup provided. I can hear whenever there is a sound output (like the Logon or Logoff sound) but it’s like crackling or glitching, like a bad audio cd struggling to read the media. I hope this explains it correctly.

is there a different driver I should install or download?

SDB:AudioTroubleshooting - openSUSE

thank you so much!
i went trough the steps of the troubleshooting and updating.
had to edit some of the repositories to fit correctly but i’ve got clear sound now.

Thanks again.

You are welcome. Though, give yourself a pat on the back, all I did was give you the link.
Well done.