Default volume too high for headphones Is there a way to change the default volume setting for headphones/line out, i.e. the one you get after plugging a jack in for the first time since you've turned your Mac on and started OSX?

I'm using a 2008 unibody (aluminum) Macbook, running Snow Leopard. And several times I've run the risk of hurting my ears because of that default value (half of the scale).
Take a look at breakaway. You can write a quick applescript to change the volume back and forth when when the headphone is connected/disconnected, and much more