Quick way to convert M4A to MP3

[nannynick]

I have some files as MPEG-4 Audio, M4A and my in-car media player refuses to play them. So I need to convert to MP3.

AudaCity with FFmpeg library will do it, one file at a time.
Anyone know of a batch converter? Can I get Audacity to batch convert files, such as converting all files in one folder?

Have you looked at Zamzar?

I think you can covert more than one file at a time.

This free M4A to MP3 converter: download.cnet.com/Free-M4a-to-MP3-Converter/3000-2140_4-187723.html will solve your problem. FYI, if you want to convert DVD video to MP3, you can refer to this tutorial: drm-assistant.com/dvdtips/view-dvd-movies-on-htc-series-phone-tablet.html but the out put format should choose MP3.

You can convert them online like Zamzar, but it maybe a little slow, to batch convert files you also can try a video converter like this tool, or freemake, format factory.