How do I extract the flag?

I strings the picture and in there was this hidden flag.wav. now how do i extract it any idea?
LOL

Who hides CTF Challenge flag in an audio file? To open a .wav file use this https://www.lifewire.com/wav-wave-files-2622395

I think that you need to change type of this file and open it in a usual mode, gedit, nano, vi …

Firstly analyse this file see witch type it really is.