How to Change the Notification Sound on Facebook Messenger on a PC or Mac
This wikiHow teaches you how to choose whether or not to hear a sound when someone sends you a Facebook message. While it is not possible to assign a custom sound or audio file to the message notification, it is possible to toggle the...
15 May 2018 ... Steps · Select On to hear a tone when someone sends you a message. · Select Off to turn disable incoming message tones.