Do this on your client machine to get rid of the annoying beeps:
If you want to disable beeping sounds in Vista/XP/2003/2000 follow any one of the method.These commands assume administrative rights on the PC.Works especially well to hush Terminal Services Beeping.
From Local Machine
To disable the PC Speaker beep temporarily from the command line type the following
net stop beep
To disable the PC Speaker beep for good run the following command
sc config beep start= disabled
if you want to disable beeps to go away even after a reboot, run the following commands
sc config beep start= disabled.
The space between start= and disabled is required.
From Remote Machine
If you want to disable beeping sounds from remote machine run the following commands
sc \remoteMachine stop beep
sc \remoteMachine config beep start= disabled
For windows XP/2000/2003 Users
Right click on My computer->Properties->Hardware->Device Manager->View -> Show Hidden Devices -> Non Plug and Play -> Beep -> Right click and select Disable
Now you need to reboot your system
Using Tweak UI
Open TweakUI and click on General–>Uncheck the Beep on Errors and click on ok