Also, here are the instructions to turn on audio description after you get your remote voice view working.
I had trouble finding out anything on the web to do this, but Danny came to the rescue. Here are his directions to turn on audio description.
1.Select the show you want
2. Press the pause button
3. Press the Menu button twice.4. Press the down arrow once this should put
you on the sub-title audio selection press select and choose the selection
you nee.Once you are through back out of the Menu and press the play button.
You can find a list of audio described shows on Amazon prime video.
Once you choose audio description, it will come on every time you start an audio described TV show or movie.