Ma sembra che non basti, infatti mi da il segunete output di errore:

Using usleep() timing
Can't open input config file /home/pain/.mplayer/input.conf: No such file or directory
Input config file /etc/mplayer/input.conf parsed: 53 binds
Opening joystick device /dev/input/js0
Can't open joystick device /dev/input/js0 : No such file or directory
Can't init input joystick
Setting up LIRC support...
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support.
You will not be able to use your remote control.

Playing Full_Metal_Panic_01.DVD(AAC)[KAA][3A5B517F].avi.
Cache fill: 0,00% (0 bytes) AVI file format detected.
VIDEO: [WMV3] 640x480 24bpp 23,976 fps 1225,6 kbps (149,6 kbyte/s)
================================================== ========================
Trying to force audio codec driver family libmad...
Cannot find codec for audio format 0xFF.
Read DOCS/HTML/en/codecs.html!
================================================== ========================
vo: X11 running at 1024x768 with depth 24 and 32 bpp (":0.0" => local display)
Disabling DPMS
================================================== ========================
Opening video decoder: [dmo] DMO video codecs
External func OLEAUT32.dll:8
DMO dll supports VO Optimizations 0 1
DMO dll might use previous sample when requested
GetOutput r=0x0 size:921600 align:1
StreamCount r=0x0 1 1
Decoder supports the following YUV formats: YV12 YUY2 UYVY YVYU
Decoder is capable of YUV output (flags 0x1b)
VDec: vo config request - 640 x 480 (preferred csp: Packed YUY2)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 640x480 => 640x480 Planar YV12 [fs]
Selected video codec: [wmv9dmo] vfm:dmo (Windows Media Video 9 DMO)
================================================== ========================
Audio: no sound
Starting playback...
Total Unfree 60 bytes cnt 1 [(nil),0]%
Successfully enabled DPMS

Exiting... (Quit)


:master:

Al che ho cominciato a pensare che magari il file è stato fatto male ed è senza audio, ma credo proprio che non sia così perchè è encodato da dvd in maniera perfetta, direi professionale, inoltre ho altri files creati dallo stesso tipo e l'mplayer le legge....

AIUTO!