Need help referencing .py files.

I am trying to import a script called MK_Win to a python script called init.py.

I cant seem to call PlayPause, probably because i don’t want my script in the root ‘addons’ folder.

The file is located at; C:\Program Files\Blender Foundation\Blender\2.78\scripts\addons\ui_mediakeys\MK_Win.py

Nothing seems to work; my google search links have all turned purple and reverse engineering other peoples scripts is a mine field!

Please can someone tell me the right way of changing the add on directory and referencing from that folder in blender.

(I need the folder because I am trying to write a script to control the media keys and parse different files depending on the OS, also it keeps my ad on nice and tidy)

im no expert on addons, but python importing should include folders:

import folder.module as module

module.function()

EDIT: do i see a space in your path name? no spaces. i hear they dont work, but ive never tried it.