I would like to use Pix on a Metro (Win 8) app. However, Pix wants the path to the application, something that Metro apps don't have. Has anybody been able to get Pix working with Metro?
PIX isn't going to work with non-desktop apps. The new way to debug these is the graphical debugger built into Visual Studio 2012. I'm also not sure PIX works properly on Win 8 for desktop apps either.