Convert w64 to gsm

Download and install the latest version of Filestar.
Right click on one or more W64 file(s) on your desktop and select Convert with Filestar.
Type convert to gsm in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.w64 -c "convert to gsm" (how).

Let your AI agent convert W64 to GSM

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

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the W64 files in my Downloads folder to GSM”

Or run it yourself:

filestarcli -i file.w64 -c "convert to gsm"

Runs in Filestar's cloud and needs a Filestar plan.

Can my AI agent convert W64 to GSM?

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.w64 -c "convert to gsm".

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .w64 and .gsm?

Name: Sony Wave64 Audio File; GSM 06.10 Lossy Speech Compression
Extension: .w64; .gsm
Format: Binary; Binary
Category: Audio; Audio
Developer: Sony; European Telecommunications Standards Institute (ETSI)
Description: Audio container file created in Sony's Wave64 format, which is supported by various Sony audio editing programs; useful for audio editing because it supports arbitrary sampling frequencies, channels, and bit depths.; A lossy file format used to compress speech in Global Standard for Mobile (GSM) telecommunications. It is very effective for reducing audio file size. However, encoding and decoding audio signals severally is discouraged as the final product will have a lot of noise. Popular with some voice mail software but it is CPU intensive.
MIME Type: audio/x-wav; audio/x-gsm
Sample: sample.w64
Wikipedia: .w64 on Wikipedia; .gsm on Wikipedia

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