Release notes

Machinedrum Editor + Monomachine Editor 0.3.4

Released 2026-10-08

A fix release on top of 0.3.3, with a new keyboard map for the Machinedrum Editor.

Screenshots, features and FAQ: https://mdmm.dev · User guide: https://mdmm.dev/guide/

Fixes

No more drop-outs while editing in a DAW (both editors). Every edit used to reach the machine at once: a parameter-lock drag sent the whole pattern up to five times a second, and each one kept the emulation busy on the audio thread, so a slower Mac missed audio buffers. While the machine plays, everything the editor sends now goes in one queue at the speed of a real MIDI cable, and the newest value wins while it waits. In a six-second lock drag the machine now takes 5 patterns instead of 31, and the audio thread runs hot about a sixth as long as before. The first edit is heard at once; during a long drag the machine follows at most about two seconds behind.
Big imports run at full speed while the machine is stopped; while it plays they go at MIDI-cable speed so the audio never drops out. A full Machinedrum backup's 128 patterns take about 14 seconds while stopped, and about four minutes while playing.
SysEx imports finish cleanly. A big import used to end with a flood of "Push failed" messages and old patterns on screen, although the machine had taken them in. The editor now checks the documents a couple at a time.
⌘C, ⌘V and ⌘X work in DAWs and in the app (Ctrl+C, Ctrl+V, Ctrl+X on Windows and Linux). Before, the plug-in window swallowed them on macOS.
Lighter page graphics while playing (Machinedrum Editor): the moving play head no longer redraws a column of steps at every step, so the editor's window costs far less while the pattern plays.

The version is shown: next to Setup in the top bar, in the keyboard view, as the first line of the right-click menu (with the Updates entries under it), and in the app's About box (the app menu on macOS, Help on Windows and Linux).

⌘-click and ⌘-drag select steps (Ctrl on Windows and Linux); ⌘⇧-click extends the selection.
Right-click a step for the step menu: trig, accent, slide, copy, paste, duplicate, clear, and the fill (every 2nd or 4th step) that used to be on ⌘-click.
FN button in the top bar: the next click, drag or key acts on every track, like holding ⌥ (double-click keeps it on).
? shows a keyboard view with every key and what it does.
Delete with nothing selected no longer clears the page; it tells you how (Clr, or ⌥Delete for the whole pattern).
COPY, CLR and PASTE in the LCD act on the selected steps when steps are selected.
The Monomachine Editor gets the same selection and step menu next.

macOS 12 or later (Intel and Apple silicon), not signed by Apple yet: the first install needs Open Anyway.
Windows x64 and Linux x64: not tested by a person yet. Feedback welcome: https://mdmm.dev/contact/