diff --git a/Pi/s.py b/Pi/s.py
old mode 100644
new mode 100755
index 5ada0f5..9b9aad2
--- a/Pi/s.py
+++ b/Pi/s.py
@@ -14,24 +14,30 @@ SoundFF = pygame.mixer.Sound('ogg/F#3v16.ogg')
 
 # port = serial.Serial("/dev/ttyS0", baudrate=115200, timeout=.001)
 port = serial.Serial("/dev/ttyS0", baudrate=115200)
+# port = serial.Serial("/dev/ttyAMA0", baudrate=115200)
 
 SoundA.play();
-
+oldrcv = port.read()
 while True:
 	# rcv decodieren
 	rcv = port.read()
 	
+	# Zustand merken, und nur "neu" starten, wenn sich etwas von 0 auf 1 veraendert hat.
 	if rcv[0] & ( 1 << 1 ) :
-		print("1");
-		SoundC.stop()
-		SoundC.play()
+		if not oldrcv[0] & ( 1 << 1 ):
+			print("1");
+			SoundC.stop()
+			SoundC.play()
 	else:
 		SoundC.stop()
+		rcvstate0 = False
 
 	if rcv[0] & ( 1 << 0 ) :
-		print("0");
-		SoundA.stop()
-		SoundA.play()
+		if not oldrcv[0] & ( 1 << 0 ):
+			print("0");
+			SoundA.stop()
+			SoundA.play()
 	else:
 		SoundA.stop()
 
+	oldrcv = rcv