chore: add audios

Author: margaritagomez

fern/assistants/pronunciation-dictionaries.mdx

@@ -30,6 +30,20 @@ Pronunciation dictionaries allow you to customize how your AI assistant pronounc
   </Step>
 </Steps>
 
+## Sample Audio Examples
+
+Below are examples demonstrating the difference between pronunciations with and without pronunciation dictionaries:
+
+**Without Pronunciation Dictionary:**
+<audio controls src="/static/audio/without-pronunciation-dictionary.wav">Your browser does not support the audio element.</audio>
+
+**With Pronunciation Dictionary:**
+<audio controls src="/static/audio/with-pronunciation-dictionary.wav">Your browser does not support the audio element.</audio>
+
+Corrected pronunciations:
+- "Nginx" → "Engine-X" (using alias rule)
+- "Kubernetes" → "/ˌkuːbərˈneɪtiːz/" (using phoneme rule)
+
 ## Prerequisites
 
 - A Vapi assistant configured with an ElevenLabs voice