How to disable libdvdcss in smplayer?

[gilpel at altern.org]

gilpel wrote:

> I believe I found what makes smplayer balk at mplayer's "-sb 25000"
> option: it uses libdvdcss(1) and libdvdcss works on this section. So, I
> believe -sb 25000 is just ignored. If libdvdcss doesn't work, that's it!

... but mplayer uses libdvdcss by default. So that's not the problem.

It seems we'll never be able to get an interface to send the right
commands to mplayer. Not here, anyways...