jack@home:/tmp/standard$ mplayer -dvd-device /media/cdrom0/ dvd://1
MPlayer SVN-r23396 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Celeron(R) CPU 2.93GHz (Family: 15, Model: 4, Stepping: 1)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

Playing dvd://1.
libdvdread: Attempting to use device /dev/scd0 mounted on /media/cdrom0 for CSS authentication
libdvdread: Can't open file VIDEO_TS.IFO.
Can't open VMG info!
No stream found to handle url dvd://1


Exiting... (End of file)
jack@home:/tmp/standard$