diff --git a/README.md b/README.md
index 9a4d1e1..9dadbe5 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,14 @@
 # racket-sound-lib
 
-Binary packages for the racket-sound FFI binding
\ No newline at end of file
+Binary packages for the racket-sound FFI binding
+
+## Using on Mac OS X 
+
+Make sure you have libao, libFLAC, mpg123 and ffmpeg-full installed using brew.
+
+% brew install libao
+% brew install flac
+% brew install mpg123
+% brew install ffmpeg-full
+
+