Well, After some playing around, it isnt exactly usable. First off on the menu there is a about an inch or 2 white space on the bottom and right side of screen, i believe this can be fixed with some kind of dpi mod, but not totally sure. secondly, only the home screen loads images, ie, whats playing now, whats coming up, if u go to pay per views, it is just empty boxes with borders, none of the images load until you get to the actual video description, but you really have no idea what you are clicking. Lastly when playing a video (which does indeed work) with my tronsmart tsm-01 air mote i could not do anything but go back, i could not pause i could not get the menu up. i could not fast forward etc. only could go back. So while it is useable to watch summerslam, with no dvr feature thats really about it. maybe the dpi issue will fix everything who knows, I only played around with it for about 15 minutes as i headed to work, but its hardly worth it right now.
As far as getting the amazon app store. probably used more effort typing in this forum than to just simply google 'android app store' :
http://bit.ly/uC6tic