diff --git a/cdoseaplay/config.py b/cdoseaplay/config.py
index 2758cd0..391ec84 100644
--- a/cdoseaplay/config.py
+++ b/cdoseaplay/config.py
@@ -12,8 +12,6 @@ font = 'Menlo'
 font_size = 28
 # 30 for chinese
 
-letter_offset = False
-
 conf = os.path.expanduser('~/.config/cdosea.json')
 if os.path.exists(conf):
     with open(conf) as fd:
diff --git a/cdoseaplay/lights.py b/cdoseaplay/lights.py
index 040582a..d457001 100755
--- a/cdoseaplay/lights.py
+++ b/cdoseaplay/lights.py
@@ -1,8 +1,7 @@
 #!/usr/bin/python3
-import os
-import string
 import subprocess
 import sys
+import os
 import time
 
 import ox
@@ -96,35 +95,33 @@ def fade_to(target, duration):
             CURRENT_STATE = sender[1].dmx_data[:16]
         time.sleep(step)
         steps -= 1
-    CURRENT_STATE = sender[1].dmx_data = [0] * 16
     time.sleep(1)
     sender.stop()
 
 
 def switch(state):
+    lights, duration = LIGHTS[state]
     if config.lanbox:
         import lanbox
         lb = lanbox.Lanbox()
+        #lb.getChannels(lights)
+        #lb.fadeTo(lights, fade)
         lb.layerGo(state)
     else:
-        lights, duration = LIGHTS[state]
         brightness = lights['7']
         fade_to(brightness, duration)
 
 if __name__ == '__main__':
     path = sys.argv[1]
-    no_sleep = len(sys.argv) > 2 and sys.argv[2] == "no-sleep"
+    no_sleep = len(sys.argv) > 2
 
-    n = int(os.path.getctime(path) - 1495280000) % 1000
+    n = int(os.path.getctime(path) - 1495280000)
     info = ox.avinfo(path)
     duration = info.get('duration', 0)
 
-    seq = random(n * 100)
+    seq = random(n * 1000)
     pos = 0
     lights = []
-    letter_offset = 0
-    if config.letter_offset:
-        letter_offset = 11 + string.ascii_lowercase.index(letter) * 10
     while pos < duration - 15:
         sleep = seq() + 15
         light = seq()
@@ -132,6 +129,5 @@ if __name__ == '__main__':
             break
         if not no_sleep:
             time.sleep(sleep)
-        print("letter", letter, "offset", letter_offset, "light", light, "cue", letter_offset + light)
-        switch(light + letter_offset)
+        switch(light)
         pos += sleep
diff --git a/cdoseaplay/pi.py b/cdoseaplay/pi.py
index 05de3c3..491a633 100644
--- a/cdoseaplay/pi.py
+++ b/cdoseaplay/pi.py
@@ -1,10 +1,12 @@
 from mpmath import mp
+mp.dps = 10000
+PI = str(mp.pi).replace('.', '')
 
 class random(object):
+    PI = str(mp.pi).replace('.', '')
+
     def __init__(self, offset=0):
         self.position = offset
-        mp.dps = 10000 + offset
-        self.PI = str(mp.pi).replace('.', '')
         self.numbers = list(map(int, self.PI[offset:]))
 
     def __call__(self):