Convert caf to m4r

Download and install the latest version of Filestar.
Right click on one or more Caf file(s) on your desktop and select Convert with Filestar.
Type convert to m4r in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.caf -c "convert to m4r" (how).

Let your AI agent convert CAF to M4R

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:

“Convert the CAF files in my Downloads folder to M4R”

Or run it yourself:

filestarcli -i file.caf -c "convert to m4r"

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 CAF to M4R?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.caf -c "convert to m4r" on your computer, so your files stay on it.

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .caf and .m4r?

Name: Core Audio File; MPEG 4 Ringtones Audio
Extension: .caf; .m4r
Format: Binary; Binary
Category: Audio; Audio
Developer: Apple; Apple Inc.
Description: Digital audio format based on Apple's Core Audio technology; stores audio data as well as text annotations, markers, channel layouts, and other information; similar to an .AIFF or .WAVE file, but does not have a 4GB size limit and can store any number of audio channels.; M4R is an iTunes ringtone file that stores mono channel audio. They are identical to the M4A format files only that they are correctly used for ringtones.
MIME Type: audio/x-caf; audio/x-m4r
Sample: sample.caf; sample.m4r
Wikipedia: .caf on Wikipedia; .m4r on Wikipedia

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