I have sounds disabled in game but this noise apparently isnt covered by it. Wish this could be muted since every time I have headphones on it rapes my hears.  

finally, someone who shares my pain. I always have to remove my headphones, turn down the volume or mute the tab cuz of this. I like my music loud and when i get on fb graal music kills my drums.  

Same the fb client for all graal servers though is very glitchy. This is definitely one of the most annoying things about being a computer player.