default.py

import xbmc
import subprocess,os
class Screensaver(xbmc.Monitor) :
        print("[CUSTOM SCRIPT]Checking PlayBackState")
        def __init__ (self):
                xbmc.Monitor.__init__(self)

        def onScreensaverDeactivated(self):
                print("[CUSTOM SCRIPT]XBMC in use")
                os.system("sudo python /home/xbian/.xbmc/addons/service.procmanager/resources/stopall.py") #Calls another script to stop process

        def onScreensaverActivated(self):
                print("[CUSTOM SCRIPT]XBMC in Standby")
                os.system("sudo python /home/xbian/.xbmc/addons/service.procmanager/resources/startall.py") #Calls another script to start process

        def onAbortRequested(self):
                print("[CUSTOM SCRIPT]XBMC is closing")
                os.system("sudo python /home/xbian/.xbmc/addons/service.procmanager/resources/startall.py") #Makes sure processes are running if xbmc gets closed

print("[CUSTOM SCRIPT]**Working**")

monitor=Screensaver()

while not xbmc.Monitor().onAbortRequested(): #End if XBMC closes
        xbmc.sleep(5000) #Repeat (ms)