How do I make a MP3? The MP3 option doesn’t show up in the file menu. Where do I find it?
Instructions for installing LAME are here: http://manual.audacityteam.org/o/man/faq_installation_and_plug_ins.html#lame
Once you have LAME installed you will be able to export as MP3 by selecting “File menu > Export” and then select MP3 as the file format in the export dialogue screen.