diff --git a/stereo2mono b/stereo2mono
new file mode 100755
index 0000000..33deb2f
--- /dev/null
+++ b/stereo2mono
@@ -0,0 +1,4 @@
+#!/usr/bin/env zsh
+
+for i in *.wav; do ffmpeg -i $i ${i:r}.mono.wav; done
+for f in *.mono.wav; do mv "$f" "${f%.mono.wav}.wav"; done