Netgear R7800 - Nighthawk X4S AC2600 Smart WiFi Router User Manual (en)

Use MyMedia to Play and Share Media Files 
 NETGEAR genie App
The media folders on the device displays.
Tap a folder and tap a media file within the folder.
The media file plays on the selected player.
To view the media file that is playing, at the bottom, tap Playing.
The Playing page displays.
Share Media With Chromecast Using the Mobile genie App
Chromecast is a media streaming device that plugs into the HDMI port on your TV. If you use 
Chromecast, the mobile genie app lets you use Chromecast to play media from devices on 
your network on your TV. 
Share Media With Chromecast Using an Android Device
To share media on the network with Chromecast using the mobile genie app for 
Android devices:
Connect your device to the router’s WiFi network.
Make sure that your Chromecast is connected to your router’s network.
Launch the genie app.
The home page displays.
Tap the My Media button