XP Audio Studder

Recently, I performed a reinstall of Windows XP on my
system. For the first few weeks, I had virtually no
problems in the audio/video department.

Then, seemingly out of the blue I have had the following
issue develop:

When playing any movie files or any sound files, I hear
what can be best described as intermittant studders in the
sound playback. This studder is basically a short, half-
second continuation of whatever tone was being played at
the time of the studder. When watching a movie file,
spoken words end up coming through as a sort of short
buzzing noise, after which, audio continues to play until
the next studder.

I've investigated the problem to the best of my ability,
but have reached an impasse. All my drivers appear to be
up-to-date, I've tweaked the hardware acceleration and am
basically lost now.

Any help that could be provided would be much
appreciated. If possible, please email me directly,
otherwise, I'll check back to this newsgroup at my
earliest opportunity.

Specs of note:
Vid Card: Radeon 9800 w/ dual monitor support (dual
monitor mode disabled)
Sound Card: SoundBlaster Live! Gamer Edition
Proc: AthlonXP 1.6Ghz - 1 GB Ram

Thanks in advance.