audio_filter_list_set() ?

[joba1]

Hi,

I stumbled over the method instance.audio_filter_list_get()
It has a promising filter, scaletempo, that might be just perfect for my program.
I wrote it to play songs that I can play aong with my guitar, to practice chords. Being able to play the songs slower (without changing the pitch) would be GREAT.
But I could not find some counter part function to set the filter. How is this supposed to work?

[Jean-Baptiste Kempf]

change the set_rate.