diff --git a/ChangeLog b/ChangeLog
index 9dfa1c4c..023b11bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -11,22 +11,21 @@
   * fixed column widths are slightly too narrow for "Ping Time" and "Musicians" and typos
 
 
+
+TODO Multichannel CoreAudio Support #44 -> integrate important code lines in Mac sound interface
+
 TODO fix UpdateCurLevel() for new 64 samples frame size
 
-TODO auto jitter buffer performance not good at 64 samples frame size
+TODO mixer faders linear -> log gain is better
+
+TODO auto jitter buffer performance not good at 64 samples frame size -> to be checked again
 
 TODO for different frame sizes (64/128) the start value of 6 for the jitter buffer might be too low
 
 TODO offer the Jamulus ASIO settingspanel in case of an ASIO ERROR to fix, e.g., incorrect sample rate (https://sourceforge.net/p/llcon/discussion/533517/thread/777663cf94/#035f)
 
-TODO Multichannel CoreAudio Support #44 -> integrate important code lines in Mac sound interface
-
-TODO update text in CAboutDlg
-
-
 TODO client: larger sound card buffers are managed by conversion buffer, not in processintern for loop (note iSndCrdFrameSizeFactor!)
 
-TODO mixer faders linear -> log gain is better
 
 
 
diff --git a/README.md b/README.md
index 34c7a24a..c2dce08d 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ each Jamulus client, mixes the audio data and sends the mix back to each client.
 
 Jamulus is __Open Source software__ ([GPL, GNU General Public License](http://www.gnu.org/licenses/gpl-2.0.html))
 and runs under __Windows__ ([ASIO](http://www.steinberg.net)),
-__MacOS__ ([Core Audio](http://developer.apple.com/technologies/mac/audio-and-video.html)) and
+__MacOS__ ([Core Audio](https://developer.apple.com/documentation/coreaudio)) and
 __Linux__ ([Jack](http://jackaudio.org)).
 It is based on the [Qt framework](https://www.qt.io) and uses the [OPUS](http://www.opus-codec.org) audio codec.
 
@@ -33,15 +33,16 @@ This ensures to get the lowest possible latencies.
 
 
 Download and Installation
----------------------------------
+-------------------------
 
 Download the latest version for [Windows, Macintosh or Linux here](https://sourceforge.net/projects/llcon/files/). 
 
-**Windows users**: The Jamulus client software requires an ASIO sound card driver to be available in the system. If your sound card does not have native ASIO support, you can try out [this alternative](http://www.asio4all.org/)
+**Windows users**: The Jamulus client software requires an ASIO sound card driver to be available in the system.
+If your sound card does not have native ASIO support, you can try out [this alternative](http://www.asio4all.org/)
 
 
 Help
-----------------------
+----
 
 Official documentation for Jamulus is on the [Github wiki](https://github.com/corrados/jamulus/wiki)
 
@@ -65,7 +66,7 @@ This code contains open source code from different sources. The developer(s) wan
 to thank the developer of this code for making their efforts available under open
 source:
 
-- Qt cross-platform application framework: http://qt-project.org
+- Qt cross-platform application framework: http://www.qt.io
 
 - Opus Interactive Audio Codec: http://www.opus-codec.org
 
@@ -75,4 +76,7 @@ source:
   
 - Some pixmaps are from the Open Clip Art Library (OCAL): http://openclipart.org
 
-- Audio recording for the server and SVG history graph, coded by [pljones](http://github.com/pljones): http://jamulus.drealm.info
+- Country flag icons from Mark James: http://www.famfamfam.com
+
+We would also like to acknowledge the contributors listed in the
+[Github Contributors list](https://github.com/corrados/jamulus/graphs/contributors).
diff --git a/src/util.cpp b/src/util.cpp
index be5e62cc..7066401e 100755
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -385,9 +385,9 @@ CAboutDlg::CAboutDlg ( QWidget* parent ) : QDialog ( parent )
         "<i><a href=""http://openclipart.org"">http://openclipart.org</a></i></li>"
         "<li>Country flag icons from Mark James: "
         "<i><a href=""http://www.famfamfam.com"">http://www.famfamfam.com</a></i></li>"
-        "<li>Audio recording for the server and SVG history graph, coded by pljones: "
-        "<i><a href=""http://jamulus.drealm.info"">http://jamulus.drealm.info</a></i></li>"
         "</ul>"
+        "We would like to acknowledge the contributors listed in the "
+        "<a href=""https://github.com/corrados/jamulus/graphs/contributors"">Github Contributors list</a>"
         "</center><br>");
 
     // set version number in about dialog