Download and install the latest version of Filestar.
Right click on one or more Brstm file(s) on your desktop and select Convert with Filestar.
Type convert to m4a in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.brstm -c "convert to m4a" (how).
Documents - File Explorer─☐✕
This PC › Documents
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.brstmContract.brstm
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert BRSTM to M4A
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 BRSTM files in my Downloads folder to M4A”
Or run it yourself:
filestarcli -i file.brstm -c "convert to m4a"
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 BRSTM to M4A?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.brstm -c "convert to m4a" on your computer, so your files stay on it.
BRSTM (Binary Revolution Stream) is an audio file format developed by Nintendo for streaming sound data in Wii games. It stores compressed or uncompressed PCM/ADPCM audio used for background music and long sound effects. The format is commonly extracted and used by fans for game audio modding and playback in emulators.
An M4A file is an audio file created in the MPEG-4 format, a multimedia container format used to store compressed audio and video data. It contains audio encoded with either the Advanced Audio Coding (AAC) codec or the Apple Lossless Audio Codec (ALAC).
