1) Get the Lame mp3 encoder for Audacity on Windows from Buonzo’s page. Just scroll down and look for something like the picture below, click on it, save it and install it on your computer. There is nothing special you should know about the installation; just keep hitting next until you finish installing it.
Once installed, open Audacity and click on “Edit” and “Preferences“.
Click on the tab labeled “File Formats” and then on the “Find Library” button.
Look for the file “lame_enc.dll“. You will find it under “C:\program files\lame for audacity\“. Select it and click “Open” to continue.
Back on the Audacity preferences window, there is an optional setting you may wish to change; the bit rate. The larger this bit rate setting is, the more quality the audio will have but the larger the file will be as well. I find that 128 is enough, however, some people prefer 160, I personally do not notice any difference; beyond 160 I would say its overkill. Once done selecting the bit rate, click “OK” to get back to the main Audacity screen.
Click on “File” and “Export to mp3“.
Click on “Save“. Next, Audacity will ask you to enter the ID3 tags; this is not to be overlooked. These tags are used by CDs and mp3 players to display the artist’s names and the song’s titles, so make sure you fill out those two fields. Click “OK” to begin the encoding process.
Audacity will finally encode the file in mp3 format.
Audacity is the most widely used open source audio editor and mp3 is the most likely used audio codec. It is a shame that both do not work together from the start. There are many mp3 encoders out there, some of them are good, and some so bad that the poor quality of the encoded files is noticeable. Lame mp3 encoder is one of the best and it is free. However, it needs to be made to work with Audacity, fortunately a few smart people have decided to create a Windows installation of Lame mp3 encoder for Audacity. I decided to write this tutorial to simplify the process even further.