Amazon Video Website Player Accessibility?

Hi, all,

It doesn't seem that the Amazon Video web player is even acknowledged by Voiceover. Are there any keystrokes for the player controls or the captions/audio descriptions? My husband would like to use closed captions and I would like to use the audio descriptions when we watch programs. In other Silverlight players, there are keyboard shortcuts, but I can't seem to find a player to focus on with the Amazon video site.

Thanks in advance for pointers.