There are many things a media center can be used for. You can, for example, download add-ons that give you access to lots of online content, such as YouTube, Khan Academy, and TED Talks.
Another interesting thing you can do is to upload video from your phone to the Pi using the previously discussed AndFTP app from Chapter 2, Server Management with Pi, and then watch movies using the media center. You need to add a directory on to the Pi where you will upload these files as a media location in Kodi. Go to Videos | Files | Files, and then navigate to Add Videos.... Here, you should first select Browse, and then Root filesystem. Note that we were using /home/pi as the target for uploads in Chapter 2, Server Management with Pi. It should work even in this case. Browse down to this location and click on OK on all three pop ups. You should now see the Pi in the list of Videos on Kodi. You can even add this folder...
