Insight - The $50 device that symbolises a shift in North Korea

By James Pearson SEOUL (Reuters) - A $50 (34 pounds) portable media player is providing many North Koreans a window to the outside world despite the government's efforts to keep its people isolated - a symbol of change in one of the world's most repressed societies. By some estimates, up to half of all urban North Korean households have an easily concealed "notel", a small portable media player used to watch DVDs or content stored on USB sticks that can be easily smuggled int