Free M4a to MP3 Converter can convert AAC to MP3, M4a to MP3 and MP4 to MP3.
Free M4a to MP3 Converter does exactly what it says; quick and easy. I needed to convert an album and it took the same time it took me to write these first two sentences to convert 12 songs. Watch out for multiple third party programs on install. Nag screen for one of their other programs when you exit one time.
The program supports a number of input formats, like the above mentioned AAC, M4a, MP4 audio, M4b (audiobooks), and some other MPEG-4 based audio formats. You can convert those types of audio files to MP3 or uncompressed WAV. The latter can be used as an intermediate format for further converting (with tools like AudioConverter Studio).
The program has also a built-in audio player, which allows you to listen to your AAC and M4a files even without converting them.
Free M4a to MP3 Converter Features:
AAC to MP3 converter.
Convert M4a to MP3.
Audio books M4b to MP3 converter.
MP4 audio converter.
3GP audio converter.
AAC, M4a, M4b player.
MP3 quality settings up to 320 Kbit/s, 48 KHz.
Batch processing of multiple M4a, AAC, M4b, MP4 etc. files.
User-friendly multilingual interface.
Meta information (ID3 tags) is copied from source files. Converted files contain all necessary data: title, artist, album (if the data was present in the source files).