METRON Preset Tool

My sequences were trapped in a binary file nobody could read

The WMD METRON is a deep Eurorack gate and trigger sequencer, and everything you program into it saves to a .WMD preset file — an undocumented binary blob. Your patterns exist, on an SD card, in a format only the hardware understands. No browsing, no diffing, no managing a library of them.

That felt wrong to me as both a musician and an engineer. The sequences are mine; I should be able to read them. So I reverse-engineered the format and built a terminal tool around what I found.

Your presets, finally legible

• View

  Open a .WMD file in the terminal and see what's inside — patterns and configuration as structured, human-readable data instead of hex.

• Manage

  Organize a library of presets like the files they are: name them, sort them, keep the good ones, version them in git if you like.

• Understand

  The decoded format is documented by the code itself — open source, so other METRON owners can build on the same foundation.

It's unofficial and reverse-engineered — independent work, not affiliated with WMD. That's rather the point: when a format matters to its users, someone should make it readable, respectfully.

A small key for a small lock

The tool is released, open source, and does its one job. It's the purest crossover in this gallery — code in service of hardware — and a note-to-self made public: no format that holds your creative work should stay opaque just because nobody bothered to look inside.

The sequencer still speaks its private dialect. The difference is that now, so do I.