Download and install the latest version of Filestar.
Right click on one or more Fssd file(s) on your desktop and select Convert with Filestar.
Type convert to sndt in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.fssd -c "convert to sndt" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
Downloads
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Pictures
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.fssdContract.fssd
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert FSSD to SNDT
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 FSSD files in my Downloads folder to SNDT”
Or run it yourself:
filestarcli -i file.fssd -c "convert to sndt"
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 FSSD to SNDT?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.fssd -c "convert to sndt" on your computer, so your files stay on it.
ND is a file extension for a sound file used with a variety of platforms. SND stands for SouND. SND files may contain audio data specific to a Macintosh sound resource (from Mac OS Classic), an AKAI MPC audio sample, a generic Amiga sound, or other audio file. SND files can often be opened by Apple’s Quicktime Player.