I can’t get it to work – Audia Booster Volume Music Review

I was going to use this to play music through the speakers in my motorcycle helmet because the speakers weren’t loud enough at high speeds but every time I try to play music it says preparing and then goes away and won’t play a song from my Apple Music library, I watched the tutorials on YouTube but nothing helped, I really wanted this app to work
Review by Jeep=keep on Audia Booster Volume Music.