The Audacity program is a freely distributed cross platform audio editing program that works in an identical fashion on both Macs and PCs. You can convert a Windows Media Audio file (WMA) into a MP3 audio format using the Audacity program. The procedure is straightforward and can be done by a novice as efficiently as someone who is familiar with using audio editing program. Besides the Audacity program, you will have to first download a free MP3 plug-in to enable Audacity to save audio files in the MP3 audio format.
Download a free MP3 plug-n program to the computer’s desktop, for example, the free MP3 Lame encoding program (see the link in "Resources" section). Double-click on the program once it has downloaded fully to install it onto the computer's hard drive. Restart a PC after the installation has been completed.
Double-click on the icon of the Audacity program to launch it. Select “Open” from the “File” menu at the top of the screen. Navigate in the window that appears to the WMA file.
Click once on the WMA file with the mouse to highlight it. Click on the “Open” button on the window to load the WMA file into the Audacity program and close the window.
Wait as the Audacity program analyses the WMA file and displays it as a “wavelength” bar on the program’s main screen.
Select “Export as MP3” from the drop-down menu beneath “File.” Click on “OK” if a pop-up window asks to mix the audio track into stereo.
Select “Desktop” from the drop-down menu beneath the “Locations” tab at the top of the window that appears on the screen.
Name the MP3 file that is to be made from the WMA file in the “Save As” column at the extreme top of the screen.
Select “MP3 files” from the “Format” drop-down menu at the bottom of the screen. Click the “Save” button at the lower-right corner of the screen.
Delete or archive the WMA file once the MP3 file has been saved to the computer’s desktop. Quit the Audacity program.
You can use “Import Audio” from the “Project” menu to import an audio file without the program analysing it.
Name the MP3 audio file with a different name to keep it from being confused with the WMA file.