WMA to M4A
M4P to M4A
MP4 to M4A
AAC to M4A
RAX to M4A
AA to M4A
Convert AA to M4A - AA to M4A Converter
Convert Audible to M4A - Audible to M4A Converter
To use DRM Converter - DRM Remover Software as AA to M4A converter (Audible to M4A converter), select MPEG4 AAC from "Encoder" drop-down list and set a desired MPEG4 AAC quality parameter in "Compression Quality" drop-down list in DRM Converter's Settings. Select AA files (Audible files) for conversion using the "Select Files" button in DRM Converter's main window toolbar (you can use Ctrl or Shift to select two or more files) or using drag&drop (for example from the Windows Explorer). Also you can drag&drop a folder with files or a folder structure. You will see all selected AA files (Audible files) in the DRM Converter's main window. To delete a AA file (Audible file) from this list, select it and click on the "Delete" button in DRM Converter's main window toolbar. Once the AA files (Audible files) are present in your list, click the "Convert" button to convert AA to M4A (convert Audible to M4A).
Since MPEG-4 is a container format, MP4 files may contain any number of audio, video, and even subtitle streams, making it impossible to determine the type of streams in an MP4 file based on its filename extension alone. In response, Apple Inc. started using and popularizing the M4A file extension using for audio-only MP4 files.
Audible.com is an Internet provider of spoken audio entertainment, information, and educational programming. Audible sells audiobooks, radio and TV programs, and audio versions of magazines and newspapers. AA files encapsulate sound encoded in either MP3 or the ACELP speech codec, but include copy protection (DRM protection) by means of an Audible user name and password.