I've just installed MPlayer on Kknoppix 3.7 and I'm getting an error when I try to play a dvd. I can see the dvd playing, but all I hear is a steady buzzing sound. Here's the error that I get in the terminal, does anyone know why I'm getting this error (Couldn't find matching filter/ao format! ). My dvd is working Perfectly fine with XINE, please help:

-----------------------------------------------------------------
MPlayer 1.0pre6-3.3.5 (C) 2000-2004 MPlayer Team
CPU: Intel Pentium 4/Xeon/Celeron Foster (Family: 8, Stepping: 7)
Detected cache-line size is 64 bytes
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2



vo: X11 running at 1024x768 with depth 16 and 16 bpp (":0.0" => local display)
77 audio & 188 video codecs
Linux RTC init error in ioctl (rtc_irqp_set 1024): Permission denied
Try adding "echo 1024 > /proc/sys/dev/rtc/max-user-freq" to your system startup scripts.
Playing dvd://1.
Reading disc structure, please wait...
There are 10 titles on this DVD.
There are 21 chapters in this DVD title.
There are 1 angles in this DVD title.
DVD successfully opened.
MPEG-PS file format detected.
VIDEO: MPEG2 720x480 (aspect 2) 29.970 fps 9801.6 kbps (1225.2 kbyte/s)
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
Cannot find codec 'dts' in libavcodec...
ADecoder init failed
ADecoder init failed
Opening audio decoder: [hwac3] AC3/DTS pass-through SP/DIF
No accelerated IMDCT transform found
hwac3: switched to DTS, 768000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, 16 bit (0x400), ratio: 96000->192000 (768.0 kbit)
Selected audio codec: [hwdts] afm:hwac3 (DTS through SPDIF)
==========================================================================
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 480 (preferred csp: Mpeg PES)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG 1 or 2 (libmpeg2))
==========================================================================
Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/8bit...
AF_pre: af format: 2 bps, 2 ch, 48000 hz, big endian AC3
AF_pre: 48000Hz 2ch AC3
[AO OSS] Can't set audio device /dev/dsp to AC3 output, trying S16...
AO: [oss] 48000Hz 2ch Signed 16-bit (Little-Endian) (2 bps)
Building audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/16bit...
[format] Sample format big endian AC3 not yet supported
[libaf] Reinitialization did not work, audio filter 'format' returned error code -2
Couldn't find matching filter/ao format!
Starting playback...
VDec: vo config request - 720 x 480 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
VO: [xv] 720x480 => 720x540 Planar YV12
A: 1.6 V: 1.6 A-V: -0.023 ct: 0.059 42/ 40 9% 22% 25.0% 8 0
demux_mpg: 24fps progressive NTSC content detected, switching framerate.
A: 3.8 V: 4.0 A-V: -0.172 ct: 0.080 99/ 96 12% 25% 12.3% 11 0


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Intel Pentium 4, 2.40Ghz
768 Mb Ram
80 Gb Hard Drive
Knoppix 3.7

http://www.mplayerhq.hu/DOCS/HTML/en/index.html

Lots of info there.

I havn't used mplayer for DVD yet.

This problem only exist when playing my DVDs. However, it will play everything else.

It's funny. This buzzing sound does it for only one specific movie under MPlayer. I tested out other movies and MPlayer plays perfectly fine. I guess I can live with that. The thing I don't like about is that it goes right into playing the dvd and doesn't give the screen options where you can choose features, languages, etc. I guess I'll just use xine to play my dvds.