Can i do this O_O?

You're doing it, aren't you?

if its a default option on the game then its legal. i dont even know why you would think that that isnt allowed.

omg! hack! ban! ...

Lol... anyway... errr... yeah... why can you not do it? ... i dont think that having +1 volume than anyone else has, makes a big difference (1% louder o_O...)... correct me if the 1% more does make a big difference...

Probably just a bug from the last patch ^_^