I have a 2010 MacPro which I'm multi-booting (OS X, Win 7) using Parallels and Bootcamp depending on what I'm doing.
I can't see how to change the audio setting so that the line-out on the back of the 'Pro can be used as the default output. Do I need a new driver or something? I've tried using Windows Update but it tells me I already have the best available driver ...

