1 files changed, 5 insertions, 1 deletions
diff --git a/about.txt b/about.txt
index 476365e7..21d1e5c7 100644
--- a/about.txt
+++ b/about.txt
@@ -62,4 +62,8 @@ Copyright © 1999-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
 
 
 libayemu - AY/YM sound chip emulator and music file loader
-Copyright (C) 2003-2004 Alexander Sashnov <sashnov@ngs.ru>
+Copyright © 2003-2004 Alexander Sashnov <sashnov@ngs.ru>
+
+
+adplug - Replayer for many OPL2/OPL3 audio file formats.
+Copyright © 1999 - 2006 Simon Peter <dn.tlp@gmx.net>, et al.