diff --git a/README.md b/README.md
index 5670318..58c6f4e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,21 @@
 audio-normalize
 ===============
 
-Audio Normalization Script for Python/ffmpeg
+Audio Normalization Script for Python/ffmpeg. I've only tested it with Python 2.6, not Python 3.
+
+The script normalizes media files to -26 dB RMS. It outputs PCM WAV files named as `normalized-<input>.wav`.
+
+Usage
+=====
+
+Very simple:
+
+    ./normalize.py -i <input-file> -v
+
+The `-v` option turns on info messages. Check out `./normalize.py -h` for more options.
+
+
+What's with the MATLAB Code?
+============================
+
+This is the reference I've used for testing whether the Python script does the same thing. You can of course use it too, if you want.