PyMedia library is a Python module for wav, mp3, ogg, avi, divx, dvd, cdda etc files manipulations.
It allows you to parse, demutiplex, multiplex, decode and encode all supported formats.
It can be compiled for Windows, Linux and cygwin.
PyMedia was built to be really simple and flexible at the same time. See tutorial for example.
It allows you to create your own mutimedia applications in a matter of minutes and adjust it to your needs using other components.
Python language is choosen because of simple semantics, complete and reach set of features.
Take a look at the PyCar application which takes advantage of the PyMedia library extensivelly and can turn your PC into the powerful car media center.
You can download PyMedia here