diff --git a/pages/common/play.md b/pages/common/play.md
index 316290470d..886337f183 100644
--- a/pages/common/play.md
+++ b/pages/common/play.md
@@ -2,6 +2,7 @@
 
 > Audio player of SoX - Sound eXchange.
 > Plays any audio from the command line, with audio formats identified by the extension.
+> More information: <http://sox.sourceforge.net>.
 
 - Play the given audio file: