diff --git a/README.md b/README.md
index 36f5a78..97dbdc2 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,9 @@ result = solver.normal('https://site-with-captcha.com/path/to/captcha.jpg', para
 ```
 
 ### Audio Captcha
-To bypass an audio captcha (mp3 formats only) use the following method. Language must be in foramt lang = 'en'. Acceptable languages are "en", "ru", "de", "el", "pt".
+To bypass an audio captcha (mp3 formats only) use the following method. 
+You must provife the language as  `lang = 'en'`. Supported languages are "en", "ru", "de", "el", "pt".
+
 ```python 
 result = solver.audio('path/to/captcha.mp3', lang = 'lang', param1=..., ...)
 # OR
diff --git a/examples/audio/example.mp3 b/examples/audio/example.mp3
new file mode 100644
index 0000000..c063a6a
Binary files /dev/null and b/examples/audio/example.mp3 differ
diff --git a/twocaptcha/solver.py b/twocaptcha/solver.py
index b0666ec..9123684 100755
--- a/twocaptcha/solver.py
+++ b/twocaptcha/solver.py
@@ -94,7 +94,7 @@ def audio(self, file, lang, method, **kwargs):
         #"method":"audio", #method
 
         if not ((not '.' in file and len(file) > 50) or (file.endswith(".mp3") and file.startswith("http"))):
-            raise ValidationException('File has not .mp3 base64 str. You must send .mp3 file or base64 str')
+            raise ValidationException('File extension is not .mp3 or it is not a base64 string.')
 
         method = self.get_method(file)
         method['method'] = "audio"