localhost ~ # mplayer -vo aa Betalicious.wmv 
MPlayer dev-SVN-rUNKNOWN-4.1.2 (C) 2000-2007 MPlayer Team
CPU: AMD Athlon(tm) 64 Processor 3500+ (Family: 15, Model: 47, Stepping: 2)
MMX supported but disabled
MMX2 supported but disabled
SSE supported but disabled
SSE2 supported but disabled
3DNow supported but disabled
3DNowExt supported but disabled
CPUflags:  MMX: 0 MMX2: 0 3DNow: 0 3DNow2: 0 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions:

Playing Betalicious.wmv.
ASF file format detected.
[asfheader] Audio stream found, -aid 1
[asfheader] Video stream found, -vid 2
VIDEO:  [WMV3]  720x480  24bpp  1000.000 fps  2664.9 kbps (325.3 kbyte/s)
Clip info:
 name: Betalicious
 author: MrJukes
 copyright: Jukesbox Productions
 comments: Clips from the Internal Halo 3 Beta