When i go to export a project to mp3 it doesn’t work, what mean by that is that it exports to MP3 File instead of .mp3 as normal.
If you need to add dots (periods) in the MP3 file name, please add the .mp3 extension to the end of the file name. Please see http://manual.audacityteam.org/o/man/faq_opening_and_saving_files.html#extensions .
Gale