Mplayer equalizer doesn't work

[D Wyatt]

I'm setting up a 64-bit F13; mplayer is from rpmfusion.  Box is
a core2 duo multiboot.

F12, 32-bit, is on another partition and mplayer works fine there.
The F13 mplayer is configured identically to the one in F12, but
in F13 the audio slides won't move; the video slides initially are
set at full scale and moving them produces no change.  In F12 the
brightness and contrast are initially set at midscale - I usually
increase brightness by about 10 for dark videos.

Mplayer is set to use the Xv driver in both cases. In ~/.mplayer
config file, vo=xv, ao=alsa, vf=eq2.
Tried vf=hue=0.0:1.0,eq2=1.0:1.0:0.1:1.0:1.0:1.0:1.0:1.0, but
changes to the 3rd eq2 field (brightness) had no effect.  Also,
pressing keys 3 or 4 have no effect.

Nouveau is installed on both F12 and F13.  GPU is 9800GT.

Any ideas?

Regards,
Doug Wyatt