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 opus in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.fssd -c "convert to opus" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
Music
.fssdContract.fssd
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert FSSD to OPUS
Claude Code, Codex, Cursor and other agents can do this with Filestar. This skill runs in Filestar's cloud and needs a paid Filestar plan.
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 OPUS”
Or run it yourself:
filestarcli -i file.fssd -c "convert to opus"
Runs in Filestar's cloud and needs a Filestar plan.
Can my AI agent convert FSSD to OPUS?
Yes, with a paid Filestar plan: this skill runs in Filestar's cloud. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.fssd -c "convert to opus".
An OPUS file is an audio file created in the Opus format (also called "Ogg Opus"), a lossy audio format developed for Internet streaming. It uses both SILK (used by Skype) and CELT (from Xiph.Org) codecs and supports variable bit rates from 6 kb/s to 510 kb/s.
