Converting .crypt files to .mp3 format.
Converting WhatsApp Encrypted Databases directly to MP3 Audio Files (.crypt to .mp3 conversion) is not possible, since CRYPT files are used exclusively to store encrypted WhatsApp text messages and chats.
At best, you can recover your chat history from such backup files.
We are not aware of any software or (online) conversion tool capable of converting CRYPT to MP3.
In a word, direct crypt to mp3 conversion is not possible.
So don't expect any so-called crypt to mp3 converter or crypt to mp3 free online conversion tool available.
The database currently does not contain any crypt software converter.