Split as4 into stems

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 split into stems in the search box.
Press Split.

Or let an AI agent do it: filestarcli -i file.as4 -c "split into stems" (how).

Let your AI agent split AS4 into stems

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 split AS4 into stems in my Downloads folder”

Or run it yourself:

filestarcli -i file.as4 -c "split into stems"

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 split AS4 into stems?

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

Using Filestar With AI Agents · Download SKILL.md

What is .as4?

Name: Electronic Arts ASF Audio
Extension: .as4
Format: Binary
Category: Audio
Developer: Electronic Arts
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.
Sample: sample.as4

Split As4 Into Stems Today

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