DVB AUDIO DEVICE: No such file or directory

Hi,

I've installed mplayer and it's worked fine. But, later I couldn't get sound
from my videos, and had appeared that message when executing from command
line:

Playing /home/bruno/mails/cuidado.wmv.
Cache fill:  0.00% (0 bytes)
ASF file format detected.
VIDEO:  [WMV1]  320x240  24bpp  15.000 fps    0.0 kbps ( 0.0 kbyte/s)
Clip info:
 name: Cuidado com o Bicho solto
 author: nhaaccc
 copyright: 2/8/2004
 comments:
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffwmv1] vfm: ffmpeg (FFmpeg M$ WMV1/WMV7)
==========================================================================
==========================================================================
Trying to force audio codec driver family libmad...
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 16000 Hz, 1 ch, s16le, 16.0 kbit/6.25% (ratio: 2000->32000)
Selected audio codec: [ffwmav2] afm: ffmpeg (DivX audio v2 (FFmpeg))
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or resource
busy
Opening /dev/dvb/adapter0/audio0
DVB AUDIO DEVICE: No such file or directory
AO: [null] 16000Hz 1ch s16le (2 bytes per sample)
Starting playback...
VDec: vo config request - 320 x 240 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [x11] 320x240 => 320x240 Planar YV12
A:  19.3 V:  19.3 A-V: -0.009 ct: -0.124 184/184  1%  4%  0.2% 0 0 0%


how could I fix this? I've found many directories DVB on my system. Here are
them:

/usr/include/linux/dvb
/usr/src/linux-headers-2.6.15-27-386/include/linux/dvb
/usr/src/linux-headers-2.6.15-27-386/include/config/video/saa7134/dvb
/usr/src/linux-headers-2.6.15-27-386/include/config/video/cx88/dvb
/usr/src/linux-headers-2.6.15-27-386/include/config/video/buf/dvb
/usr/src/linux-headers-2.6.15-27-386/include/config/dvb
/usr/src/linux-headers-2.6.15-27/include/linux/dvb
/usr/src/linux-headers-2.6.15-27/drivers/media/dvb

/lib/modules/2.6.12-9-386/kernel/drivers/media/dvb
/lib/modules/2.6.12-10-386/kernel/drivers/media/dvb
/lib/modules/2.6.15-27-386/kernel/drivers/media/dvb
/lib/modules/2.6.15-28-386/kernel/drivers/media/dvb

Somebody could help me???