sound processing modules in python - anyone?

[sittner at lkb.ens.fr]

Hi everyone,
I'm looking for a module for sound processing (manipulating sound objets,
filters, ffts etc.).
I tried Snack, but when i downloaded the package that was supposed to be
for python, there was only the Tk/Tcl stuff (where's the .py ?).
could anyone help me with that (or with any other sound module for python)?
thanks in advance,
g