[CM] snd: mouse-wheel up/down in gtk?

[anders at avinjar.no]

Hi,

im trying to bind-key the mouse-wheel to zoom in/out in snd, as in the
example for mouse-click-hook in the docs.

However, both mouse 4 & 5 (up & down) only zooms in.  Any cures?

in a gnome desktop

-anders