Many of Audible users would have the trouble that can't listen to the purchased audiobooks on as many devices as they want due to Audible's DRM protection on the audiobooks. Because of that, all digital audiobooks sold on Audible.com are encoded in protected .aa and .aax formats and only allowed to be played on selected devices. So most of you may wonder whether it's able to get rid of the DRM from those protected DRM .aa and .aax Audible audiobooks. Fortunately, the answer is yes.
Actually there are many ways to bypass the DRM from Audible AA/AAX files. One of the common ways is to burn the DRM'd audiobooks to CDs. But that's also limited and you can only burn the audiobooks once. So here comes the easiest yet most effective way. You can use the third-pary audiobook converter software to bypass the DRM from Audible audiobooks and convert the DRM'd aa and aax audiobook files to common unprotected MP3 format so that you can freely enjoy the Audible audiobooks on any media devices you like.
Among all of the DRM audiobook removal software in the market, TunesKit DRM Audiobook Converter for Mac is the fastest yet most popular one which can easily remove DRM from protected Audible aa/aax audiobooks and convert the files to DRM-free MP3, AAC, WAV, FLAC, M4A at 30x faster speed with original ID3 tags preserved.
Complete Guide to Remove DRM and Convert Audible AA/AAX to MP3
* Make sure you've downloaded and installed TunesKit Audiobook Converter on your Mac OS X 10.8 or later.
Step 1. Import .aa and .aax audiobooks purchased from Audile.com to iTunes audiobooks playlist;
Step 2. Load the aa/aax audiobooks from iTunes to TunesKit;
Step 3. Choose output audio format as MP3;
Step 4. Begin to remove DRM and convert DRM Audible AA/AAX audiobooks to MP3.
When the conversion finished, you are able to import the DRM-free audiobooks to any media devices for playback at anytime you want.
Source page: How to Remove DRM and Convert AA/AAX to MP3
