Audio garbled when video is displayed

[Douglas Phillipson]

This is a strange one.  When I play video with flash in Firefox on 6.1, 
as long as I keep the video covered the audio plays fine.  When the 
video is shown the audio sounds garbled.  Also, if the video is covered 
and I move any window or application on the desktop, the audio pops and 
spits.  I'm using two gForce FX-5200 cards in Xinerama mode.  It appears 
that ANY movement on my desktop makes the audio garbled.  Here are my 
loaded audio modules:

snd_emu10k1_synth       8960  0
snd_emux_synth         39296  1 snd_emu10k1_synth
snd_seq_virmidi         8576  1 snd_emux_synth
af_packet              24584  0
snd_seq_midi_emul       8192  1 snd_emux_synth
snd_seq_dummy           4996  0
snd_seq_oss            36480  0
snd_seq_midi            9984  0
snd_seq_midi_event      8960  3 snd_seq_virmidi,snd_seq_oss,snd_seq_midi
snd_seq                59120  9 
snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_emu10k1           128288  3 snd_emu10k1_synth
snd_rawmidi            27264  3 snd_seq_virmidi,snd_seq_midi,snd_emu10k1
snd_ac97_codec         97696  1 snd_emu10k1
snd_ac97_bus            3456  1 snd_ac97_codec
snd_pcm_oss            47360  0
snd_mixer_oss          19584  1 snd_pcm_oss
snd_pcm                84612  4 snd_emu10k1,snd_ac97_codec,snd_pcm_oss
snd_seq_device          9868  8 
snd_emu10k1_synth,snd_emux_synth,snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq,snd_emu10k1,snd_rawmidi
snd_timer              25348  3 snd_seq,snd_emu10k1,snd_pcm
snd_page_alloc         11400  2 snd_emu10k1,snd_pcm
snd_util_mem            6016  2 snd_emux_synth,snd_emu10k1
snd_hwdep              10756  2 snd_emux_synth,snd_emu10k1
snd                    58372  16 
snd_emux_synth,snd_seq_virmidi,snd_seq_oss,snd_seq,snd_emu10k1,snd_rawmidi,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_device,snd_timer,snd_hwdep

Thanks

Doug P