I released pyxiesynth at http://sf.net/projects/pyxiesynth

It is a sound sample read-writer for now but I will make it into some sound sample modification tool. It has a GUI, here's a screenshot :

Futhermore I botchered up a powerpc64 neslisp (lisp->ppp64 assembler), it is found here : https://sourceforge.net/projects/neslispppc64/