Windows Vista Volume Mixer - Nice...

Wow. Windows Vista's volume mixer allows you to control the volume of individual applications (including Windows Sounds). This could be a great solution for finally silencing websites that play music and other annoying sounds. I really haven't been keeping up with Vista, but this is one feature that really makes me want it. There's an application for Windows XP called IndieVolume ($24.95), I'm not sure if there's anything like this for OS X.