Convert as4 to mka

Download and install the latest version of Filestar.
Right click on one or more As4 file(s) on your desktop and select Convert with Filestar.
Type convert to mka in the search box.
Press Convert.

Or let an AI agent do it: filestarcli -i file.as4 -c "convert to mka" (how).

Let your AI agent convert AS4 to MKA

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 AS4 files in my Downloads folder to MKA”

Or run it yourself:

filestarcli -i file.as4 -c "convert to mka"

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 AS4 to MKA?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.as4 -c "convert to mka" on your computer, so your files stay on it.

Using Filestar With AI Agents · Download SKILL.md

What is the difference between .as4 and .mka?

Name: Electronic Arts ASF Audio; Matroska Audio File
Extension: .as4; .mka
Format: Binary; Binary
Category: Audio; Audio
Developer: Electronic Arts; Matroska
Description: Audio file in Electronic Arts' ASF music format (.asf/.as4), used by EA games of the 1990s; starts with an SCHl, SHEN or 1SNh header and holds ADPCM-compressed game audio and music.; Audio container format that supports several types of audio compression algorithms; related to the .MKV video format, but only contains audio data.
MIME Type: audio/x-matroska
Sample: sample.as4; sample.mka
Wikipedia: .mka on Wikipedia

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