Hello! I have a problem with sound in opensuse.

The sound problem is in:

-youtube videos (flash in general)
-banshee (when playing mp3)

The sound is choppy and flash videos are kinda choppy and slow too. In youtube there is only the red filling bar, not the grey.

I have got an old pc but in windows or ubuntu i didnt experience simiral sound problems.

My pc:

pentium III, 1ghz
GeForce 5200FX
Creative Sound Blaster AudioPCI 128

Any help would be highly appreciated!
Thank you in advance.