MusicNote Haven MIDI Manager
A practical workflow for large MIDI/KAR collections

Turn a difficult MIDI/KAR collection into something you can actually find, review and use.

MIDI Manager scans the folders you already have, analyzes filenames and MIDI/KAR evidence, helps identify artist and title, sends uncertain results to Review, and copies only approved files to a separate Organized Library. Your originals stay where they are.

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MIDI Manager 1.3.2

Windows 1.3.2 · Microsoft Store | Linux 1.3.2 · verified .deb

Windows 1.3.2 is available through Microsoft Store. Linux 1.3.2-1 is available as the verified Ubuntu 26.04 LTS amd64 .deb.

Get Windows 1.3.2 Download Linux 1.3.2
Proven at real-world scale

Tested with libraries approaching 200,000 MIDI/KAR files

Large-library testing covers indexing, resumable analysis, fast search, evidence review and copy-first organization. The recorded benchmark remains available as a historical snapshot.

See the recorded benchmark Watch the benchmark video
≈200K large-library testing
Resumable analysis and maintenance
Human review for uncertain identifications
Local-first source archive stays on your storage
See the real workflow

From source folders to a reviewed Organized Library.

The app keeps analysis, identification, human review and safe copy execution in one local workflow so you can improve a collection without handing control of the source files to the software.

  1. 1. Scan & index Inventory .mid, .midi and .kar files from folders you choose.
  2. 2. Analyze & identify Use filenames, embedded MIDI/KAR metadata, technical data and local-first music references.
  3. 3. Review uncertainty Check questionable identities before anything is approved for organization.
  4. 4. Copy & verify Copy only approved files to a separate Organized Library and verify the output.
Download & try free Open the user manual
From source folders to an organized, playable library
From source folders to an organized, playable library
What you can do after the scan

One application for finding, fixing and using a large MIDI archive.

The Organizer is the main workflow, but the library remains useful afterwards instead of becoming a one-time export.

Find and understand files

Search and browse the indexed collection, inspect technical MIDI data and open detailed file information.

Recognize artist and title

Combine filename clues, embedded MIDI/KAR metadata and music-reference evidence, with review for uncertain results.

Organize without touching the source

Build a separate Organized Library with approved copies while the original files remain in place.

Listen while you work

Play individual MIDI/KAR files; paid editions add longer playback and queue workflows.

Maintain and preserve

Use Library Health, re-evaluation, reports and edition-dependent IMG/archive tools for ongoing collection work.

Guides and contact

Find the right next step for your MIDI library

Planning to organize a large collection? Read our practical guide, or tell us which part of your MIDI/KAR library is giving you trouble.

Read the organizing guide Tell us about your MIDI library
Designed for cautious collection work

You stay in control at the points that matter.

Review before copy

Uncertain recognition is not silently treated as correct; questionable results stay visible for review.

Ordinary files stay ordinary files

The Organized Library is made from normal MIDI/KAR files in a folder you choose. Nothing is locked inside MIDI Manager.

Local-first by design

Your collection stays on your own computer, NAS or storage. The optional online reference path does not upload your MIDI/KAR files.

Start without committing

Try the real workflow for free. Upgrade only if you need more.

There is no monthly or annual subscription. Personal and Professional are one-time lifetime licenses for MIDI Manager 1.x.

Trial / Free

Free

Organize up to 100 unique files and keep using the free browse, search, review and single-file playback functions afterwards.

Personal

€39

For one computer, larger collections and the main paid Organizer, playback and disk-image workflows.

Professional

€89

For up to three computers, unlimited Organized Library output and advanced IMG, archive and maintenance workflows.

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