[Tutor] snack classes

[Andrea Valle]

Dear all,
I'm tryin' to use Snack soundkit. That's really interesting. But I'm not a
programmer.
As I wanted to implement some simple audio manipulation, I created a class
Sig from the Sound class of Snack, i.e.:
class Sig (Sound):

But I am not able to use all the methods of Sound with Sig.
It seems that I need some reference to tkSnack.
Can anyone kindly explain what happens and how to do?

Thanks a lot as usual and sorry if it's evident.

-a-