sound card probem

[张勇顺 <biosedit@gmail.com>]

I uses alsa driver in kernel2.6.11.3 for my sound card
the sound card work well when the computer is start
but it is not work after about 10min with xmms or mpp3blaster or mplayer
mpg123 but
i am can heard it work with gaim
when uses mpg123 the errn is


MPEG 1.0 layer III, 192 kbit/s, 44100 Hz joint-stereo
Can't find a suitable libao driver. (Is device in use?)
Module Size Used by
snd_intel8x0 35520 3
snd_ac97_codec 85500 1 snd_intel8x0
nvidia_agp 8988 1
ohci_hcd 23172 0
nls_cp936 127616 4
i2c_nforce2 8064 0
i2c_core 24704 1 i2c_nforce2
[biosedit@debian:00:52:43~#2]$
the sound modules is load