Amadeus DVD weird problem

[E. J. Cerejo]

Hello,

I have a weird problem when playing a particular DVD in my FBSD system 
running 4.8 stable.  This DVD is Amadeus, it won't play with mplayer at 
all and with ogle it plays very fast without any sound, but this 
particular DVD plays everywhere else, in my TV DVD Player and on any 
windows box.  The weird part is I have other DVD movies and they play 
very nicely either in mplayer or ogle.  Does anyone know what might be 
the problem, is it, possibly, the way this DVD is encrypted?