Configure sound settings

[ChristopherHaws]

Hey there! Thanks for this software! I would love to see an option to be able to disable the notification sounds. I currently run the AirMessage web app as a PWA on my Windows computer and there is no way for me to disable the notification sounds (at least that I am able to find). I also can't use the Windows Volume Mixer because the app shows up as "Mozilla Firefox" there which would mute the rest of my web browser also.