Why mplayer in FreeBSD 5.1 behave not so good as Debian in mycomputer?

[zch]

>What do you mean by 'oss' audio? FWIW, if I use mplayer with the OSS
>sound driver by 4Front Technology, it is slow and stuttering, but 
>when using FreeBSD's pcm driver it is quite OK. I guess it can be
>made to work properly, but currently I'm using pcm anyway.
>
>Karel.
>_______________________________________________

I enable snd_es137_loader in loader.conf and "mplayer -ao help" gives audio output drivers:
mpegpes,oss,null,pcm and plugin, while the pcm option is just for file output. When the null
option selected, which means no sound, it works well. Any suggestions? Thanks!
	
zhang