diff --git a/code/piplayer4.py b/code/piplayer4.py
index 38e6e74..dde754e 100644
--- a/code/piplayer4.py
+++ b/code/piplayer4.py
@@ -1,5 +1,5 @@
 # piplayer4 - AudioLauncher
-# http://www.tilman.de/piplayer4
+# http://www.tilman.de/projekte/audiolauncher
 
 import RPi.GPIO as GPIO
 import logging
@@ -19,9 +19,8 @@ SOUND_SCANNING = "mnt/INTERNAL/sounds/scanning.mp3"
 SOUND_SCAN_FAIL = "mnt/INTERNAL/sounds/fail-05.mp3"
 QR_SCANNER_TIMEOUT = 4
 
-
 # photo sensor on PIN 17
-PIN_SENSOR = 4 # TEST
+PIN_SENSOR = 4 ## TODO TEST
 
 # IR LED on PIN 22
 PIN_IR_LED = 22
@@ -98,7 +97,7 @@ try:
 
     while True:
         logging.info('Wait for photo sensor')
-        GPIO.wait_for_edge(PIN_SENSOR, GPIO.FALLING) # TEST
+        GPIO.wait_for_edge(PIN_SENSOR, GPIO.FALLING) ## TODO TEST
         
         logging.info('Photo sensor active, activating light and camera')
         play(SOUND_SCANNING)