How do I Convert MP3 to AA Freeware?

Written by andrew hlavats
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How do I Convert MP3 to AA Freeware?
MP3s cannot be converted to the Audible Audio format, but other options are available. (Audio book image by Oleksiy Ilyashenko from

Audible Audio (.AA) is a proprietary digital audio format created by Audible for use on media devices such as the iPod or Blackberry. While MP3s are the standard audio format for digital media, .AA provides higher data compression, additional features such as audio book chapters, and receives much better support from Audible itself. Unfortunately, because the format is proprietary and protected by strict DRM, converting an .MP3 file to .AA is illegal and cannot be done. However, .MP3s can be converted to the .M4B format, which plays on Apple devices and software.

Skill level:

Things you need

  • MP3-to-M4B converter (e.g., dBpowerAMP Music Converter (DMC))
  • DOS shell
  • Audio book editing software (e.g., iPodSoft's Chapter Master)

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  1. 1

    Rip your audio content from CD to .MP3 using a CD ripping program, such as the dBpoweramp CD Ripper.

  2. 2

    Check to see if your CD ripped as multiple .MP3 files. If not, skip the next step.

  3. 3

    Concatenate (joining character strings end-to-end) your individual .MP3s in DOS by using the following syntax: copy "File Name.mp3" /b + "File Name2.mp3" /b + "File Name3.mp3". This will combine all three files into the first one, without renaming or deleting any of them.

  4. 4

    Convert your .MP3 to .M4A using conversion software, such as dBpoweramp Music Converter. The program may prompt you to download an M4A encoder; go ahead and do so.

  5. 5

    Add chapters manually using an audio book editing program, such as Chapter Master.

  6. 6

    Save the file as .M4B, for an audio book.

  7. 7

    Load the finished file into your Apple iTunes compatible media device.

Tips and warnings

  • Note that .M4A and .M4B are both MPEG audio formats. The difference is that .M4B are specifically audio books, and are compatible with Apple iTunes devices (iPod, iPhone, etc.), and support audio book features such as chapters and bookmarks.

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