Setting a metro app for a macro key?

[twelvetudors]

So I have a Sidewinder X4 keyboard that has three banks of 6 macro keys, and I'd like to set one of them to open the Xbox Music app. I can set the key to open a dekstop program, but I can't find the metro apps to choose one of those.
Is there any way to find the metro apps in the file explorer so I can at least find a location to copy and paste?

 

[AngryNil]

I don't know exactly where the app is in the file system, but you can create a shortcut pointing to the location below.

microsoftmusic://microsoftmusic.exe