To keep the original filename when sending audio in the future, you can send the file as a instead of an Audio file.
Are you trying to a deleted WhatsApp audio file or just looking for a way to rename your existing media? Download AUD 20200709 WA0020 mp3
: The unique identifier for that day. WA stands for WhatsApp, and 0020 means it was the 21st audio file (starting from 0000) processed on that specific date. Where to Find and Download It To keep the original filename when sending audio
The name follows a strict structure used by the WhatsApp media management system: Download AUD 20200709 WA0020 mp3