Trick for Sending audio via WhatsApp on windows phone!!

* First you have to go to any one file manager(Files or Pocket file manager) ..
*Then go in the sd card and then go in the pictures folder!! in it create a new folder called whatsapp audio!!
*Then  again go to the sd card and open the music folder and copy any song to that whatsapp audio folder created in pictures!!
* Then you have to do is "Rename the song you copied to whatsapp audio to mp4"
* Open your whatsapp and open video.. you can see whatsapp audio and your copied song in this!!
* Don't worry about mp4 extension.. Receiver will receive this file in mp3 format!!