With linux you can have your package listed in synaptic, and can use with a sudo apt-get install whatever ogg player like ogg123, and windows I don't work with that much, but I'm pretty sure I've played .wav files from the command line before while working with cross platform just for practice, so with python 3 you can use what's available in the system with an if command.
-- http://mail.python.org/mailman/listinfo/python-list
