Pull audio using VLC

This is more for my own convenience/memory but here goes:

vlc "input_file.ext" --sout #transcode{acodec=mp3}:duplicate{dst=std{access=file,mux=raw,dst=\""output_file.mp3"\"},select=\"novideo\"} vlc://quit

Load a file into VLC, convert to mp3, save, quit.

done.