Download and install the latest version of Filestar.
Right click on one or more Bfstm file(s) on your desktop and select Convert with Filestar.
Type convert to amr in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.bfstm -c "convert to amr" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
Music
.bfstmContract.bfstm
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert BFSTM to AMR
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 BFSTM files in my Downloads folder to AMR”
Or run it yourself:
filestarcli -i file.bfstm -c "convert to amr"
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 BFSTM to AMR?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.bfstm -c "convert to amr" on your computer, so your files stay on it.
BFSTM (Binary caFe STream) is an audio file format developed by Nintendo for streaming audio data in games on platforms such as the Wii U and Nintendo 3DS. It stores compressed or PCM audio streams used for music and sound effects that are played back in real time rather than loaded entirely into memory. The format is part of Nintendo's internal sound engine toolset used across several game titles.
An AMR file is an audio file saved in a compressed audio format developed by Ericsson. It is used by many 3G cell phones for voice recordings such as MMS messages. AMR files incorporate the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.
