VK/YandexMusic remote control

PlayPauseVkYa

# This is AppleScript to play/pause player in VK.com or in Music.Yandex.ru
# Make it a Service (via Automator) and assign shortkey to call it.
#
# Look here: https://www.evernote.com/shard/s40/sh/a77fd23b-47f0-4b8d-a18f-6cea2c6dd4c4/389e1fe1622daff105433f75158bdd0d
#
# TODO: find a way to assign use <Play/Pause> key on keyboard to this shortcut
#       + even better, if it would also listen to <Play/Pause> on my headphones cord (like iTunes)
#
# (c) Vladimir Mityukov, 2014

set matchVK to "vk.com"
set matchYM to "music.yandex.ru"

tell application "Google Chrome"
	
	set window_list to every window
	repeat with the_window in window_list
		set tab_list to every tab in the_window
		repeat with the_tab in tab_list
			
			set the_url to the URL of the_tab
			
			if the_url contains matchVK then
				tell the_tab
					execute javascript "document.getElementById('gp_play').click();"
				end tell
			end if
			
			if the_url contains matchYM then
				tell the_tab
					execute javascript "document.getElementsByClassName('player-controls__btn_play')[0].click();"
				end tell
			end if
			
		end repeat
	end repeat
end tell

Эх, не понимаю я Objective C. Т.е., ни VK туда не впилить, ни себе перенять метод перехвата Media keys. :-(