Fire Macros from slieds in slideshow

[puggan]

I got 2 scripts named on.bash and off.bash that turns of the background musik.
i wrote 2 oo-macros that do shell on thos scripts

if i run the macros from the menu run macro, it works.

but how do i get the sliedshow to use thous script to turn on and of the background musij?

Becose on the slides whit sounds, id like to have backgrounds sound turned off, and then turn it on on next slide.