All Apple's media content downloaded from the iTunes Store has FairPlay DRM protection on them to prevent them from being copied and distributed easily. To convert iTunes M4V audiobook to WAV format, the first thing we need to do would be to remove the FairPlay DRM protection from the M4B audiobooks first. In the content below I would show you how to remove DRM from iTunes M4B audiobook and convert iTunes M4B audiobook to WAV.

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Part 1: Know more about M4B to WAV

This part introduce you with more information about the M4B to WAV so that you can have a better understanding of them.

Why will You Convert M4B to WAV?

It's known to us that the purchased/rental/downloaded audiobooks from iTunes/iBooks, etc. are with DRM protection which is for the purpose of limiting people to play the DRM audiobooks only on certain devices. People can't listen to the DRM audiobooks on other unauthorized devices unless they figure out a way to crack the audiobook DRM protection and convert the protected M4P/M4A/M4B to MP3.

Besides, WAV files are one of the more popular digital audio formats and a gold standard in studio recording, which can capture and recreate an original audio waveform at the highest quality without affecting or altering the sonic characteristics of the sound in any way. As a result, people prefer converting M4B to WAV for better experience.

Are All M4B Files Protected?

As we mentioned above, M4B files may be protected by FairPlay DRM. Whereas, M4B has DRM-ed and DRM-free version in audiobook and podcast files. You can check whether there is DRM protection in file in details of files.

Part 2: How to Remove DRM from iTunes M4B audiobook with Prof. DRM

To convert iTunes M4B audiobook to WAV, we are going to remove DRM from iTunes M4B audiobook first. And to do that, we need a DRM removal program. The DRM removal tool I'll be using in this tutorial is Leawo Prof. DRM. It's a new program from Leawo Software. As a professional DRM removal and converter tool combo, it can help users remove DRM protection from iTunes music, TV shows, movies and audiobook and Audible audiobook. Having Leawo Prof. DRM is like having the right to play your iTunes media content anytime, anywhere with any mobile handsets you want. With this iTunes M4B audiobook converter, you can make full use of your purchased iTunes media content.

  • Leawo Prof. DRM
  • Leawo Prof. DRM

    1. Convert iTunes DRM-protected M4V movie and TV show to DRM-Free MP4
    2. Remove DRM from M4B, AA, AAX files and convert any Audible AA, AAX file to MP3, even without iTunes authorization
    3. Convert iTunes DRM-Protected M4P and non-DRM iTunes M4A Music to MP3
    4. Remove DRM-protection on Spotify music and convert to Universal audio format for enjoying music offline on any devices
    5. Convert DRM-protected eBook from Kindle, Kobo, Adobe to DRM-free epub, mobi, azw3, txt, etc., format

Leawo Prof. DRM can remove DRM from iTunes M4B audiobook and convert it to MP3 audio file. After the DRM protection is removed from the M4B audiobook, we are going to convert the audiobook to WAV format with a video converter.

Here's how to remove DRM from iTunes M4B audiobook with Leawo Prof. DRM.

Step 1. Add your iTunes M4B audiobooks to the program.

To add your M4B audiobooks in iTunes to the program, first open the program, and then click Add Files button. You would see 2 Add Files buttons, either one of them would work. Also you can drag and drop the audiobooks directly to the interface if you've opened the folder that stores your audiobooks.

Remove DRM from iTunes M4B Audiobook

Step 2. Change the parameters of the M4B audiobooks.

Leawo Prof. DRM provides you with the option to change the parameters of your audiobooks. The adjustable parameters include: Channels, Sampling Rate and Bitrate. Click on the audiobook file that you want to edit and you should see an Edit button to the right of the audiobook title. Click on it to edit the parameters as you like.

Remove DRM from iTunes M4B Audiobook

Step 3. Set output directory for the audiobooks.

You can find the default output directory at the bottom of the file list next to the Output tag. If you want to change it, simply click the "…" button and select a new directory from the dialog box.

Remove DRM from iTunes M4B Audiobook

Step 4. Start the whole DRM removal process.

After setting all the things up, you should be ready for the DRM removal process now. Just click the Convert button at the bottom right corner and Leawo Prof. DRM will start to remove DRM from your iTunes M4B audiobooks and convert them into MP3 audio files.

Remove DRM from iTunes M4B Audiobook

Leawo Prof. DRM removes the DRM protection in the background. You don't need to do anything upon the DRM removal. Leawo Prof. DRM will do all things for you. You could view all iTunes audiobook conversions on the converting panel. When the conversion completes, you could then add the converted iTunes audiobook files to a video converter for converting to WAV format.

Actually, Leawo Prof. DRM is far more than an iTunes DRM removal and converter tool that enables you to remove DRM protection upon iTunes media files including video, music and audiobooks, and then convert them to DRM-free media files, but also a tool that could help you convert eBooks from Kindle, Kobo and Adobe Digital Edition, and download and convert Spotify songs regardless of Spotify subscription types.

Part 3: How to Convert the Converted Audiobooks to WAV Format with Desktop Video Converter

After the DRM removal process is finished, we can start to convert iTunes M4B audiobook to WAV, or to be precise, convert MP3 to WAV as we've converted the iTunes M4B audiobook to MP3 in the previous DRM removal process.

To convert the audiobooks to WAV, we are going to need an audio converter. The audio converter I'm using in the instructions below is Leawo Video Converter, also a program from Leawo Software. It's a powerful video and audio file converter with great compatibility to different video and audio formats. The high quality of the output file is guaranteed and it's extremely user-friendly. Here's how to convert iTunes M4B audiobook to WAV using Leawo Video Converter.

  • Leawo Video Converter
  • Leawo Video Converter

    1. Convert video and audio files between 180+ formats without quality loss
    2. Support 720P, 1080P and even real 4K video output
    3. Create photo slideshows from photos stored on camera, computer, camcorder, etc
    4. Built-in video editor to trim, crop, add watermark, apply special effect, etc
    5. 2D to 3D converter with 6 different 3D movie effects available

Note that Leawo Video Converter is integrated into a software bundle called Prof.Media. After installing Leawo Video Converter on your compuer, that's the program you will find on your computer.

Step 1. Import the converted M4B audiobooks to the video converter

Launch Prof.Media and then click the Video Converter tab to enter the video converter module. To add the converted audiobooks to the program, you can directly drag and drop them to the interface of the program or click the Add Videos button and select them from the Open File dialog box.

Convert iTunes Audiobook to WAV

Step 2. Set default output format to be WAV

There's a button on the left side of the green Convert button. On the button shows the default output format. To change it to WAV, click on the button and then on the menu that follows, click the Change button. On the following Profile page, click Common Audio tab, select WAV and then click OK to go back to the interface.

Convert iTunes Audiobook to WAV

Step 3. Adjust WAV parameters

If you want to adjust the parameters of the output WAV file, click on that Format button again and then click Edit on it. The following Profile Settings page will show you audio parameters including: Audio Codec, Bit Rate, Sample Rate and Channel. Make adjustments to those parameters as you like and when you are done, click the OK button to go back to the main interface.

Convert iTunes Audiobook to WAV

Step 4. Start to convert iTunes M4B audiobook to WAV

Click the aforementioned green Convert button to call out a sidebar from the right side of the file list. On it you can set the default output directory for the output file under the Save to tag. After setting the output path, click the Convert button from below to start the audiobook conversion.

Convert iTunes Audiobook to WAV

After the conversion is done, you can find your converted audiobooks in the folder you previous set. Overall, if you want to convert iTunes M4B audiobook to WAV, you are going to need two programs. But the whole process is fairly easy to operate, just follow the instructions above and you can get it done real quick.

Part 4: How to Convert Converted Audiobooks to WAV Format with Free Online WAV Converter

If you prefer some free tools to convert these DRM-free MP3 files to WAV format, we would like to recommend you online free WAV converter tool. You could simple search free online video converter on and then you will get quite a lot of options, most of which will help you solve the DRM-free MP3 to WAV audio conversion well. Here, in this guide, what we would like to recommend to you is ZAMZAR. ZAMZAR is an all-inclusive online media converter tool that converts video and audio files between almost all audio and video file formats online for free. it enables you to convert local media files, online media files, and manage files online.


The conversion with ZAMZAR is quite simple. You only need to add source media files, set output file format, and then convert media files online for free. check the below steps to learn how to convert the DRM-free MP3 file to WAV audio files with this free online audiobook converter in detail.

Step 1: On your browser, visit

Step 2: Click the "Choose Files" button to browse and upload converted iTunes audiobooks (now in DRM-free MP3 format)

Step 3: Click the "Convert files to:" drop-down box. And then on the drop-down box, choose WAV audio as output format.

Step 4: Then click the "Convert" button to start converting uploaded DRM-free MP3 files to WAV files online with this free online WAV audio converter.

Step 5: After converting, you will be guided to download converted audiobooks (now in MP3 format) to your computer. Specify a download directory and download the converted audio file to your computer.

Obviously, online free video converters like ZAMZAR could help you convert DRM-free MP3 audiobooks to WAV files easily. However, there might exist some shortcomings with these free online video converter tools: most of them have limit in source file size while audiobooks are generally large; most free online video converters would require you to register before you could do the free conversion; some of them even require you to upgrade to the Premium version, which means they are not free actually. Also, not all online video converters support batch conversion.

Part 5: Tips on Converting Audiobooks to WAV Format

When converting Speech or Voice M4B to WAV, such as audiobooks, podcasts, or interviews, it makes sense to reduce the size of the output WAVs without losing quality.

Typically, the voiced speech of an adult is at the range of about 100 to 300 Hz. For the speech audio, it is okay to lower the Sample Rate and fix it to 8000Hz, 11025Hz, or 16000Hz. Apart from that, stereophonic effects are irrelevant for the speech audio, and the channels could be set as 'Mono.' Such downsampling and setting could reduce the size of output WAV a few times.

It's useful for you to set the WAV Codec to G.711, ADPCM, or GSM to efficiently encode the speech. 'GSM 6.10 / Microsoft Variant' Audio Codec makes the best size since WAV files encoded with the GSM encoder could become ten times smaller than source M4B!