It looks like your FFMPEG wasn't compiled with libmp3lame. See this post: superuser.com/questions/196857/how-to-in... If you can't compile it on your own you'll have to search for a binary that does support it.
Try this, it worked for me. Sudo apt-get install ffmpeg libavcodec-extra-52 thanks to ffmpeg: convert audio-only flv to swf.
Or follow this video, the best solution for me: youtube.com/watch?v=oH5fu4rcJhg.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.