I have been working on my 5th video with Movie Maker. No major issues with adding MP3 audio before.  This time I have put together a long series of photos totaling about 10 minutes. I add a MP3 audio clip (entire song lasting 9 min, 43 sec.). No matter how I try to do this it cuts off the climatic final 3-4 seconds. When I listen to the song otherwise, it plays to its entirety. What gives?