Convert m4b to w64

Download and install the latest version of Filestar.
Right click on one or more M4b file(s) on your desktop and select Convert with Filestar.
Type convert to w64 in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.m4b -c "convert to w64" (how).

Let your AI agent convert M4B to W64

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Then ask your agent:

“Convert the M4B files in my Downloads folder to W64”

Or run it yourself:

filestarcli -i file.m4b -c "convert to w64"

Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.

Can my AI agent convert M4B to W64?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.m4b -c "convert to w64" on your computer, so your files stay on it.

Using Filestar With AI Agents →

What is the difference between .m4b and .w64?

Name: MPEG-4 Audio Book File; Sony Wave64 Audio File
Extension: .m4b; .w64
Format: Binary; Binary
Category: Audio; Audio
Developer: Apple; Sony
Description: It is an audiobook file compressed using .AAC algorithm based on MPEG-4 container format. It is similar to .M4A file but its denoted as an audiobook and supporting audio players can bookmark it.; Audio container file created in Sony's Wave64 format, which is supported by various Sony audio editing programs; useful for audio editing because it supports arbitrary sampling frequencies, channels, and bit depths.
MIME Type: audio/x-m4a; audio/x-wav
Sample: sample.m4b; sample.w64
Wikipedia: .m4b on Wikipedia; .w64 on Wikipedia

Convert M4b To W64 Today

Get started within minutes

Download