Completely useless
Like many other reviewers, I expected to be able to use my own headphones through this app. You can’t. This app adds no functionality and is just a less convenient way of navigating the exact same menu as is on the seat back display. The only media functionality is pausing or playing the media on the seat back and adjust the volume of the wired headphones, both of which are easier and more convenient to just do on the seat back display itself.