Windows Phone app lets your PC or Microsoft Surface work with your Windows Phone 8 device
The Windows Phone app lets you switch music, video and pictures back and forth from your phone to PC or Microsoft Surface tablet
After installing this app, going to WindowsPhone.com will allow you to find out if your phone is lost, to download apps or to find out more information about your phone. If you love the Windows platform so much that you will be buying a Windows Phone 8 model to go along with your Windows 8 PC or Microsoft Surface tablet, then this is the app that you don't want to miss. It's free and you can find it at the sourcelink.
source: WindowsStore via WMPoweruser