The Nokia Play To app is now available for Lumia devices through the Nokia Collection Section in the Marketplace.
It is exclusive to Nokia Phones.
The Play To allows you to stream media content (pictures, music, videos) from your Nokia Phone to your PC or any DLNA enabled device.
How do you do it? Just connect your Lumia device and a DLNA device (PC, TV, game console) to the same wireless network and allow remote control from another device in the stream drop down menu (PC) and that's it.
Here is a demo on how it works between a Lumia 900 and a Windows 8 Tablet.
This is just a sneak peek of what seamless connection is going to be like when Windows 8 and Windows Phone 8 are officially out.