[ikthius]

if you have windows,

go to your Control Panel and click on Sounds and Audio Devices
there you will can click on Sounds and go down uintil you see either: Device Connect or Device Disconnect. Right click whichever you want to get rid of and you will have lots of noises to choose from, go to the top of this list and choose None.

Hope this is what you are looking for.

ik