Those who don’t know about this app check out the details below:
Lumia Play to Details:
Stream wirelessly from your Lumia with Lumia Play to. Enjoy photos, music and videos on web-enabled TVs, speakers and other devices that support DLNA. Find devices on the same Wi-Fi network, tap to connect and start streaming your content straight from your phone.
Lumia Play to may not be able to stream DRM-protected music.