The M4a is a multimedia format that is just the MPEG-4 format. This is a widely used format for the conversion of files of all sorts. If you need to convert your M4a files to the MP3 format, then you should use Free M4a to MP3 Converter for the task.
The interface of Free M4a to MP3 Converter is where this process is started. You will notice how user friendly and simple that interface is. The selection of M4a files can be done with a mere drag and drop operation. Files can even be put in a queue that Free M4a to MP3 Converter will go through for the conversion.
You will always get a completion message after each conversion. Another thing you will notice is how accurate the conversion is since Free M4a to MP3 Converter keeps the original content of the files intact.