Stéganographie

I have been stuck for a while in step 2 (the audio file) and i don’t really get the hint (everywhere)
if anyone can help me over PM i would really appreciate it !
Thank you

you haven’t tried everything otherwise you would have found it

well, i have tried everything iknow, maybe i missed something..
can you help on PM please ?
i really want to continue with the challenge

PM are currently broken

make a search on the web about the tools to hide a message in an audio file