Plex organizes all of your video, music, and photo collections, and gives you instant access to them on all of your devices.
Putting the free Plex Media Server software on your home computer and installing the Plex for Android app, see below, you can enjoy all of your personal media right on your Android device. Plex clients require a decent device to run on, which is why an Android TV Box is perfect. Plex is the all-in-one media sharing server that uses your PC to distribute content to any device. Plex essentially acts as a faux-server. It uses your computer and the media you already have as a media hub for devices you grant it access to.
Plex also has a lot of different content channels built in for you to use within it.
You can download the plex app here