Begin by burning the audio files that you want to convert to MP3 files onto a blank CD. You can use your favorite media player to burn an audio CD. See the Resources section below for more information on burning a CD.
Download and install the FreeRIP Basic program (see Resources below). Open the program.
Insert the CD that you burned in Step 1 into your computer.
Click the "Rip" option at the top of the program. A drop box will appear.
Select "Rip Selected Tracks To MP3." The audio files on the CD will begin ripping to MP3 format.