diff --git a/README b/README
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--- a/README
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@@ -9,3 +9,7 @@ can be started via:
 ```
 gunicorn --config gunicorn_config.py app:app
 ```
+
+
+
+4ton.wav by al_sub -- https://freesound.org/s/137267/ -- License: Attribution NonCommercial 4.0
diff --git a/samples/4ton.wav b/samples/4ton.wav
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Binary files /dev/null and b/samples/4ton.wav differ