What packages do I install for ffmpeg and libmp3lame?
sudo apt-get install ffmpeg libavcodec-extra-52
If package not found try:
sudo apt-get install ffmpeg libavcodec-extra-53
you can also try to install the libmp3lame0 package:
sudo apt-get install libmp3lame0
Install the encoder by running he following command
sudo apt-get install libavcodec-extra-53