diff --git a/README.md b/README.md
index f2a7c3f..cb766ae 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,11 @@
 # Audio-Normalizer
-A bash script to normalize the sound volume of an audio file 
+A bash script to normalize the sound volume of an audio file
+
+# requirements:
+
+* A running ffmpeg
+
+
+# how to:
+
+bash normalizeaudio.sh   (prepared for .m4u files) --> chnge for other file types