How to get .m4a to m4r converter Home Page: free m4a to m4r converter online conference total m4a2m4r data Free download and install the professional APE Converter - Audio Converter (Windows Version. Mac Version ), and then run the software. The Additional Settings offer you the possibility of adjusting the time Range, namely the Start Time Offset and the End Time Offset. You can set the preferred save location, then click on the Convert button and retrieve your audio files to listen whenever you please.