Merge au into audiobook

Download and install the latest version of Filestar.
Right click on one or more Au file(s) on your desktop and select Convert with Filestar.
Type merge into audiobook in the search box.
Press Merge.
Or let an AI agent do it: filestarcli -i file.au -c "merge into audiobook" (how).

Let your AI agent merge AU into audiobook

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

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Use Filestar to merge AU into audiobook in my Downloads folder”

Or run it yourself:

filestarcli -i file.au -c "merge into audiobook"

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 merge AU into audiobook?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.au -c "merge into audiobook" on your computer, so your files stay on it.

Using Filestar With AI Agents → · Download SKILL.md

What is .au?

Name: Audacity Audio File
Extension: .au
Format: Binary
Category: Audio
Developer: Audacity
Description: Audio file created by Audacity, a free, cross platform audio editor; uses a proprietary format that can only be opened by Audacity; saved as one of multiple audio data files for an Audacity project (.AUD).
MIME Type: audio/basic
Sample: sample.au
Wikipedia: .au on Wikipedia

Merge Au Into Audiobook Today

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