Exporting your Audactiy file as an MP3

When you are done editing your audio in Audacity, select File > Export as .MP3.

You may get an error message saing that you need the file "lame_enc.dll"
Select "yes" in the error message to indicated that you want to find that file now.

Navigate to j3>Recorder, and open the "lame" folder. Select the file.

Your export should now work.