I was having problems with sound on my laptop (actually, i was trying to run kismet covertly, but the sound kept giving me away
) so i searched through all the forums to try and figure out how to stop or control the sound. So first off, in kismet, you can just type the letter "m" for mute, and it will turn off all the sounds generated by kismet. Press "m" again and it will restore it.
Now if you want to control the sound volume, from a shell, you can just type "alsamixer", and a graphical shell will pop up and allow you to control the overall volume, among other things. I use my up/down/left/right arrows to navigate and adjust the controls.
I read all this information somewhere in these forums, so I am not trying to take credit for someone else's hardwork, but merely trying to pass the information I learned on. Thanks and I hope this helps others out as much as it did me.
BTW, I am using a dell x1 laptop.