xmms使用一次后不能用了

tzhan

xmms使用一次后不能用了

我装的是Debian sid版，声卡是VIA ac97。开机时显示找到了声卡，开机后耳机也能发声。装好xmms后第一次使用可以正常发生，但关掉后再打开则不能使用，显视：
Please check that:
Your soundcard is configured properly
You hace the correct output plugin selected
No other program is blocking the sound card
用mplayer时显示:
Could not opern/initialize audio device->no sound.

用lsmod显示：
Module Size Used by Not tainted
parport_pc 25672 1 (autoclean)
lp 6880 1 (autoclean)
parport 21696 1 (autoclean) [parport_pc lp]
via82cxxx_audio 18144 0 (unused)
ac97_codec 9568 0 [via82cxxx_audio]
soundcore 3204 2 [via82cxxx_audio]
usb-storage 97120 0 (unused)
cpuid 1184 0 (unused)
apm 9116 0
msdos 4668 0 (unused)
nls_utf8 768 0 (unused)
nls_gb2312 496 0 (unused)
nls_cp936 119936 1
nls_cp950 98432 1 (autoclean)
nls_big5 480 0 (unused)
binfmt_misc 5572 1
keybdev 1664 0 (unused)
usbkbd 2848 0 (unused)
input 3040 0 [keybdev usbkbd]
usb-uhci 20676 0 (unused)
usbcore 48000 1 [usb-storage usbkbd usb-uhci]

重新安装xmms又是这样。

alsaconf显示:
No supported PnP or PCI card found.

怎样关掉oss服务。
请高手指点。