用mplayer和beep时都是这样，进度条停止了，过了一会又从停止的地方开始播方
用mplayer时视频也停止了
输出插件装的是alsa
lsmode
snd_mpu401 6728 0
snd_mpu401_uart 7808 1 snd_mpu401
snd_intel8x0 33692 2
snd_ac97_codec 92704 1 snd_intel8x0
snd_ac97_bus 2304 1 snd_ac97_codec
snd_rawmidi 25504 1 snd_mpu401_uart
snd_seq_device 8716 1 snd_rawmidi
snd_pcm_oss 53664 0
snd_mixer_oss 18688 1 snd_pcm_oss
psmouse 36228 0
snd_pcm 89864 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer 25220 1 snd_pcm
serio_raw 7300 0
snd 55268 14 snd_mpu401,snd_mpu401_uart,snd_intel8x0,snd_ac97_codec,snd_rawmidi,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore 10208 1 snd
snd_page_alloc 10632 2 snd_intel8x0,snd_pcm
