Shutter / Flash mp3

I would be very greatful if you could make it possible to insert a wav or mp3 file after the countdown. So I could insert that much loved shutter sound . Thank you in advance 🤗 Also if I may, I have my own mp4 telling customers that their session is now being printed. But “your” grey “printing” icon always shows up. Would be grand if I could untick it somewhere….

THAAAANK YOU ❤️