diff --git a/etc/example.conf b/etc/example.conf
index ac670c6d23..dfdbd0839a 100644
--- a/etc/example.conf
+++ b/etc/example.conf
@@ -44,7 +44,6 @@
 # Keep the player window on top of all other windows.
 #ontop=yes
 
-
 ##################
 # audio settings #
 ##################
@@ -55,6 +54,15 @@
 # Disable softvol usage, and always use the system mixer if available.
 #softvol=no
 
+# Scale audio tempo by playback speed without altering pitch. (By default does
+# nothing if playback speed is not changed. May introduce artifacts.)
+#af=scaletempo
+
+# Output 5.1 audio natively, and upmix/downmix audio with a different format.
+#audio-channels=5.1
+# Disable any automatic remix, _if_ the audio output accepts the audio format.
+# of the currently played file.
+#audio-channels=empty
 
 ##################
 # other settings #