amarok: Effect not available ?

[Pavel Troller]

Hi!
  When I try to activate any effect with current amarok CVS, I'm getting 
an error dialog saying that "Effect are not available with this engine".
It does that for arts, xine and gst engines. I don't have more engines
available. So which one is supposed to have effect available ? It worked
with arts formerly, but now it doesn't.
                                             With regards, Pavel Troller