import pyglet.media
from os import path

wood_break = pyglet.resource.media(path.join('resources', 'sounds', 'wood_break.wav'), streaming=False)
water_break = pyglet.resource.media(path.join('resources', 'sounds', 'water_break.wav'), streaming=False)

import pyglet.media
from os import path
pyglet.resource.path = [".","resources/sounds"] #Note: Pyglet uses /'s regardless of OS
pyglet.resource.reindex()

wood_break = pyglet.resource.media("wood_break.wav", streaming=False)
water_break = pyglet.resource.media("water_break.wav", streaming=False)

Use pyglet resource.path to index sound resource files Thanks to PR #32 by @tfaris Pyglet does not like backslashes at all, and wants to be fed /'s only