tumus,
Thanks for the command arguments, but I need to modify to work for binary Mplayer downloaded from the Internet as follows:
mplayer -cache 256 -ao oss -vo fbdev -framedrop -quiet -sws 0 -slave -fs -vop scale=320:-2 abc.mpg
Basically, I have removed "-menu" and the "," infront of scale.
However, I still cannot get sound output any advice.