Now let's focus on how to convert M4A to MP3 step by step.
Step 1 Free download Aiseesoft Audio Converter, install it and add M4A file(s) you want to convert 
Step 2 Proper format and folder
Want to convert M4A to MP3? Choose MP3 as the output format and click Browse button to set the path where you want to save the converted file.
Step 3 Start conversion
The last step is to press the Start button at the bottom of main interface to convert M4A to MP3.
Tip:
It is optional for you to further edit the output MP3 file, including: trim any-time length clips by clicking Trim button, set advanced output audio parameters pressing Setting option, catch you-like image when previewing, etc.
For more details, explore: M4A to MP3
