See if this helps...
"Your computer may be very new and the playback hardware acceleration may be set too high."

To decrease your playback hardware acceleration settings, follow these steps:
1. Click Start | Settings | Control Panel.
2. Double-click the Multimedia icon. The Multimedia Properties window appears.
3. Click the box next to Use preferred devices only so that it contains a check mark.
4. Click the Advanced Properties button (located in the Playback area).
5. Click the Performance tab.
6. Click the Hardware Acceleration slider bar and move it to the Basic Acceleration setting.
7. Click OK.
8. Click OK again to close the Multimedia Properties window.
9. Close the Control Panel.



Translated for Windows XP

Goto Control Panel, click Sounds Speech and Audio Devices
Sounds and Audio Devices
Check "Use only default devices"
Click "Advanced" by sound Playback
Performance
6.Click the Hardware Acceleration slider bar and move it to the Basic Acceleration setting.
7. Click OK.

That should stop the stutters.
If that works, you can try and move the slider up a notch till it starts, then move it back to the previous notch that last work with out stutters.

Other wise...
Quote Originally Posted by Starfuqer
sounds like an irq sharing problem
Place your sound card in a different pci slot
Try this, untill possibly finding an working pci slot.