IDEA: mute PC on incoming mobile phone calls (or at least notify on calls/SMS)

[brotherS]

This is possible for cars, why not for PCs? Or is it? How? Where?

This post (topic: "Tray utility to mute speaker when you are away from the computer!") on http://www.donationcoder.com/forum/index.php?topic=1580 brought up the thought:

my request for playing the beeps was more for times when I am not playing music, but rather just doing normal activities and want to lower the volume for example if a phone call comes in etc.

Is there a cheap USB solution for this? Or at least a solution that will notify you about incoming calls or SMS?

[brotherS]

I'm pretty sure it HAS to be somehow possible to do that, if I could only find the hardware necessary...