How to Convert Audible AA / AAX to MP3

Enjoy Audiobooks

Audible's .aa file format encapsulates sound encoded in either MP3 or the ACELP speech codec but includes unauthorized-playback prevention by means of an Audible username and password, which can be used on up to four computers and three smartphones at a time. Licenses are available for schools and libraries.

Audible's content can only be played on selected mobile devices. Its software does enable users to burn a limited number of CDs for unrestricted playback, resulting in CDs that can be copied or converted to unrestricted digital audio formats.

AAX files are encrypted M4B's. The audio is encoded in variable quality AAC format. While the vast majority of books are encoded at 64 Kbps, 22.050 kHz, stereo, some are as low as 32k, mono. Radio plays are often encoded at 128kbps and 44.1 kHz. Additionally, many audiobooks in Germany are encoded at the latter bitrate and are marketed as "AAX+"; however, there is no difference in the actual file format.

Most AA / AAX from Audible.com are protected, that is to say, users cannot freely play these AA / AAX audio files on most audio players. If users can convert AA / AAX to MP3 format, there is no need to worry about the limitations of AA and AAX anymore.

Steps to use iTunes Converter to convert AA / AAX to MP3

Here we use Macsome iTunes Converter(Win | Mac) to convert audiobooks from AA / AAX to MP3. Through the conversion, users can also keep audiobook chapters when they convert to AAC format. Since it doesn't support the split function, which will be added in the future.

First, free download the software according to your computer system and install it on your computer.

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Then run the iTunes Music Converter, and choose the Audiobook files you want to convert from the iTunes Books library.

Please make sure that you have authorized the purchased Audiobooks to the device or the computer so as to play them normally.

And now click on the icon in the upper right corner, then you will come to the Settings window.

Preferences output Settings

Here, you can set the Output Format (MP3 / AAC / FLAC / WAV / AIFF / ALAC), the Bit Rate (320kbps, 256kbps, 192kbps, 128kbps), Sample Rate, and Output Folder. You can also sort the converted Apple Music folder by Artist, Album, Artist/Album, or Album/Artist by changing the output organized way.

Finally, click the Convert button to start the conversion. Meanwhile, the paid Audiobook's limitation is removed as well.

Converting Audio books to MP3

After the conversion is done, you can play the converted audiobook files on any MP3 or other audio player as you like.

Summary

Audible books give us more and more enjoyment listening to an audiobook during our daily life. After we purchased them from Audible.com, even we can play them via iTunes after we authorize it. If you want to play them on your MP3 player and so on, the primary audiobook AA and AAX files can be transferred.

If you try to use iTunes Music Converter to record the Audiobook to MP3 format and transfer the recorded MP3 files to your MP3 player, now you can play them anytime.

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