old_contents: from threading import Timer
  from . import track
  
  _listeners = []
  
  class TrackChecker():
  	def __init__(self, interval = 5):
  		self.listeners = []
  		self.CHECK_INTERVAL = interval
  		self.currentSong = ""
  		self.currentArtist = ""
  		self.currentAlbum = ""
  		self.timer = None
  
  	def checkSong(self):
  		song = track.getCurrentSong()
  		artist = track.getCurrentArtist()
  		album = track.getCurrentAlbum()
  
  		if (song != self.currentSong or artist != self.currentArtist 
  			or album != self.currentAlbum):
  			self.currentSong = song
  			self.currentArtist = artist
  			self.currentAlbum = album
  			self._callListeners()
  		
  		if self.timer != None:
  			self.startTimer()
  
  	def registerListener(self, function):
  		_listeners.append(function)
  
  	def _callListeners(self):
  		for listener in _listeners:
  			listener()
  
  	def startTimer(self):
  		self.timer = Timer(self.CHECK_INTERVAL, self.checkSong)
  		timer.daemon = True
  		self.timer.start()
  
  	def cancelTimer(self):
  		self.timer.cancel()
  		self.timer = None
  
new_contents: from threading import Timer
  from . import track
  
  _listeners = []
  
  class TrackChecker():
  	def __init__(self, interval = 5):
  		self.listeners = []
  		self.CHECK_INTERVAL = interval
  		self.currentSong = ""
  		self.currentArtist = ""
  		self.currentAlbum = ""
  		self.timer = None
  
  	def checkSong(self):
  		song = track.getCurrentSong()
  		artist = track.getCurrentArtist()
  		album = track.getCurrentAlbum()
  
  		if (song != self.currentSong or artist != self.currentArtist 
  			or album != self.currentAlbum):
  			self.currentSong = song
  			self.currentArtist = artist
  			self.currentAlbum = album
  			self._callListeners()
  		
  		if self.timer != None:
  			self.startTimer()
  
  	def registerListener(self, function):
  		_listeners.append(function)
  
  	def _callListeners(self):
  		for listener in _listeners:
  			listener()
  
  	def startTimer(self):
  		self.timer = Timer(self.CHECK_INTERVAL, self.checkSong)
  		self.timer.daemon = True
  		self.timer.start()
  
  	def cancelTimer(self):
  		self.timer.cancel()
  		self.timer = None
  
subject: Fix name error in setting daemon