By default you receive a sound notification everytime your friends send you chat message. This sometimes become irritating when you are listening to some music, watching video on YouTube etc. Facebook allows you to completely disable the sound notification, this tutorial explains how you can do this by following few simple steps given here.
- Login to your Facebook Account.
- Visit Account Settings -> Notification -> How You Get Notifications -> On Facebook -> Click Edit Buttom (Small Pencil Icon)
- Uncheck Play a sound when each new notification is received
- Click Save Changes button.