Sometimes trying a different method can help. I understand that you are currently able to initiate the videos but they stop playing. I am suggesting an alternate method of enabling Flash videos. This is obviously a hardware/hardware support issue. The only reason I suggest this is that a very similar approach worked for another one of our users. I figure it might be worth a try, and if it doesn't work then nothing is lost. Unfortunately, I don't have access to a Kindle to try this for myself. Please let me know if you have any success or come across any other ideas. Thanks!