Programs using libparlatype written in C can be compiled with GCC using:
gcc `pkg-config --cflags parlatype` -o example example.c `pkg-config --libs parlatype`
There are bindings for other languages, e.g. in Python Parlatype can be imported like this:
gi.require_version('Parlatype', '4.0')
from gi.repository import Parlatype
There is a glade catalog for PtWaveviewer so you can include it in your glade projects.