Sometimes you want to crank the volume on your computer, other times you want to kill things altogether. But then there are times when you'd like to have some soft music playing, keep certain applications muted, while also keeping your mail alerts at full volume because you're waiting on an important message.
Application level volume control is now available to OS X users via a new application called SoundBunny from Prosoft Engineering. Just a simple set of sliders for controlling individual applications.
It seems so simple it feels wrong it costs US$9.99, but there's a 30-day trial so you can test it out and see how it works for you.