diff --git a/android/sound.cpp b/android/sound.cpp
index d095f667..d1fe9d61 100644
--- a/android/sound.cpp
+++ b/android/sound.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/android/sound.h b/android/sound.h
index 955d3db7..4af7353c 100644
--- a/android/sound.h
+++ b/android/sound.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/linux/sound.cpp b/linux/sound.cpp
index f4036604..5ffabc6c 100755
--- a/linux/sound.cpp
+++ b/linux/sound.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/linux/sound.h b/linux/sound.h
index 0510f551..0b03c275 100755
--- a/linux/sound.h
+++ b/linux/sound.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/mac/sound.cpp b/mac/sound.cpp
index 8b208b19..2a87776e 100755
--- a/mac/sound.cpp
+++ b/mac/sound.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/mac/sound.h b/mac/sound.h
index 19adcf84..3f8d7352 100755
--- a/mac/sound.h
+++ b/mac/sound.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/aboutdlgbase.ui b/src/aboutdlgbase.ui
index 738395df..c6ed9d23 100755
--- a/src/aboutdlgbase.ui
+++ b/src/aboutdlgbase.ui
@@ -135,7 +135,7 @@
            <item>
             <widget class="QLabel" name="lblCopyright">
              <property name="text">
-              <string>Copyright (C) 2005-2019</string>
+              <string>Copyright (C) 2005-2020</string>
              </property>
              <property name="wordWrap">
               <bool>false</bool>
diff --git a/src/analyzerconsole.cpp b/src/analyzerconsole.cpp
index af751356..2cc5ee8c 100644
--- a/src/analyzerconsole.cpp
+++ b/src/analyzerconsole.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer 
diff --git a/src/analyzerconsole.h b/src/analyzerconsole.h
index 0a5756e0..6fa3b598 100644
--- a/src/analyzerconsole.h
+++ b/src/analyzerconsole.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/audiomixerboard.cpp b/src/audiomixerboard.cpp
index 27303ad0..dee57495 100755
--- a/src/audiomixerboard.cpp
+++ b/src/audiomixerboard.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer 
diff --git a/src/audiomixerboard.h b/src/audiomixerboard.h
index 45f01bda..4d900861 100755
--- a/src/audiomixerboard.h
+++ b/src/audiomixerboard.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/buffer.cpp b/src/buffer.cpp
index c2a4125c..ef9f278f 100755
--- a/src/buffer.cpp
+++ b/src/buffer.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/buffer.h b/src/buffer.h
index 80ca19ea..67658760 100755
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/channel.cpp b/src/channel.cpp
index c08688d6..72938aad 100755
--- a/src/channel.cpp
+++ b/src/channel.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/channel.h b/src/channel.h
index cecbba29..618c02f0 100755
--- a/src/channel.h
+++ b/src/channel.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/chatdlg.cpp b/src/chatdlg.cpp
index 2395026e..7ed41376 100755
--- a/src/chatdlg.cpp
+++ b/src/chatdlg.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/chatdlg.h b/src/chatdlg.h
index dc1b2233..f9e7dc2c 100755
--- a/src/chatdlg.h
+++ b/src/chatdlg.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/client.cpp b/src/client.cpp
index 05a60e9d..d76c9960 100755
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/client.h b/src/client.h
index c3c05e6e..b56a8478 100755
--- a/src/client.h
+++ b/src/client.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/clientdlg.cpp b/src/clientdlg.cpp
index 5f1dd467..d9d7d7a2 100755
--- a/src/clientdlg.cpp
+++ b/src/clientdlg.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/clientdlg.h b/src/clientdlg.h
index 65326f05..ffa0571a 100755
--- a/src/clientdlg.h
+++ b/src/clientdlg.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/clientsettingsdlg.cpp b/src/clientsettingsdlg.cpp
index 5a66d018..7c5e2740 100755
--- a/src/clientsettingsdlg.cpp
+++ b/src/clientsettingsdlg.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/clientsettingsdlg.h b/src/clientsettingsdlg.h
index dc2d61bf..cf50826a 100755
--- a/src/clientsettingsdlg.h
+++ b/src/clientsettingsdlg.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/connectdlg.cpp b/src/connectdlg.cpp
index 39f8bc14..ee7fa8f6 100755
--- a/src/connectdlg.cpp
+++ b/src/connectdlg.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/connectdlg.h b/src/connectdlg.h
index 63f89e1e..ae9aee55 100755
--- a/src/connectdlg.h
+++ b/src/connectdlg.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/global.h b/src/global.h
index 330e0f0f..2dc92a0e 100755
--- a/src/global.h
+++ b/src/global.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * \Copyright (c) 2004-2019
+ * \Copyright (c) 2004-2020
  * \author    Volker Fischer
  *
 
diff --git a/src/historygraph.cpp b/src/historygraph.cpp
index 9c3522f3..6d66e66c 100644
--- a/src/historygraph.cpp
+++ b/src/historygraph.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/historygraph.h b/src/historygraph.h
index 47038599..c1ef1df2 100644
--- a/src/historygraph.h
+++ b/src/historygraph.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/main.cpp b/src/main.cpp
index d4e42399..85bcb444 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/multicolorled.cpp b/src/multicolorled.cpp
index 3315854c..411119c9 100755
--- a/src/multicolorled.cpp
+++ b/src/multicolorled.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/multicolorled.h b/src/multicolorled.h
index cbdacbc4..c72bc8f4 100755
--- a/src/multicolorled.h
+++ b/src/multicolorled.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/multicolorledbar.cpp b/src/multicolorledbar.cpp
index fe5beecd..b27114c3 100755
--- a/src/multicolorledbar.cpp
+++ b/src/multicolorledbar.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/multicolorledbar.h b/src/multicolorledbar.h
index b301bbf4..6d215c55 100755
--- a/src/multicolorledbar.h
+++ b/src/multicolorledbar.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/protocol.cpp b/src/protocol.cpp
index 5b834fc3..33ce501f 100755
--- a/src/protocol.cpp
+++ b/src/protocol.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/protocol.h b/src/protocol.h
index 54202101..59ed83ac 100755
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/server.cpp b/src/server.cpp
index 4a5930a7..0d281e5e 100755
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/server.h b/src/server.h
index 7df8a994..f1a947ab 100755
--- a/src/server.h
+++ b/src/server.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/serverdlg.cpp b/src/serverdlg.cpp
index 1c328f18..228a113e 100755
--- a/src/serverdlg.cpp
+++ b/src/serverdlg.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/serverdlg.h b/src/serverdlg.h
index 205f255c..476a69a6 100755
--- a/src/serverdlg.h
+++ b/src/serverdlg.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/serverlist.cpp b/src/serverlist.cpp
index 44d94b91..483d1d48 100755
--- a/src/serverlist.cpp
+++ b/src/serverlist.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/serverlist.h b/src/serverlist.h
index 71602591..4528ad6b 100755
--- a/src/serverlist.h
+++ b/src/serverlist.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/serverlogging.cpp b/src/serverlogging.cpp
index eb4e4955..8c401c3a 100755
--- a/src/serverlogging.cpp
+++ b/src/serverlogging.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/serverlogging.h b/src/serverlogging.h
index df30332b..aa4344d9 100755
--- a/src/serverlogging.h
+++ b/src/serverlogging.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/settings.cpp b/src/settings.cpp
index f5760dee..93ec691b 100755
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/settings.h b/src/settings.h
index 888465e3..c204fa74 100755
--- a/src/settings.h
+++ b/src/settings.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/socket.cpp b/src/socket.cpp
index 3925d409..e8910c92 100755
--- a/src/socket.cpp
+++ b/src/socket.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/socket.h b/src/socket.h
index 768f20e2..a8360ed5 100755
--- a/src/socket.h
+++ b/src/socket.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/soundbase.cpp b/src/soundbase.cpp
index 7f27b26e..485d961f 100755
--- a/src/soundbase.cpp
+++ b/src/soundbase.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/soundbase.h b/src/soundbase.h
index 81431709..e7fc73da 100755
--- a/src/soundbase.h
+++ b/src/soundbase.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/testbench.h b/src/testbench.h
index b80aa43f..f4d59704 100755
--- a/src/testbench.h
+++ b/src/testbench.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/util.cpp b/src/util.cpp
index f18c70bd..caa06e66 100755
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/src/util.h b/src/util.h
index 32d407a6..98a6e6d2 100755
--- a/src/util.h
+++ b/src/util.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/windows/sound.cpp b/windows/sound.cpp
index ff861a74..bbb41a0d 100755
--- a/windows/sound.cpp
+++ b/windows/sound.cpp
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer
diff --git a/windows/sound.h b/windows/sound.h
index f51ad398..302d8435 100755
--- a/windows/sound.h
+++ b/windows/sound.h
@@ -1,5 +1,5 @@
 /******************************************************************************\
- * Copyright (c) 2004-2019
+ * Copyright (c) 2004-2020
  *
  * Author(s):
  *  Volker Fischer