Download and install the latest version of Filestar.
Right click on one or more Spx file(s) on your desktop and select Convert with Filestar.
Type extract stems in the search box.
Press Extract.
Or let an AI agent do it: filestarcli -i file.spx -c "extract stems" (how).
Let your AI agent extract SPX 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
Then ask your agent:
“Use Filestar to extract SPX stems in my Downloads folder”
Or run it yourself:
filestarcli -i file.spx -c "extract 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 extract SPX stems?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.spx -c "extract stems" on your computer, so your files stay on it.
Audio file compressed using Speex compression and saved in the Ogg Vorbis container format; designed as an audio compression format specifically for speech; compresses voice at 2 to 44 kbps and supports 8 kHz, 16 kHz, and 32 kHz compression in the same bitstream.
