Install MIDI Manager on Linux.

1. Download the .deb package

Download musicnote-haven-midi-manager_1.3.3-1_amd64.deb from the Downloads page. Save it in your normal Downloads folder.

• Use the official MusicNote Haven Downloads page.
• Do not install a copy received from an unknown source.
• The package is a production package for Ubuntu/Kubuntu 26.04 amd64.

2. Open Terminal in the download folder

Open a terminal and go to the folder where the downloaded file is located.

cd ~/Downloads
ls -lh musicnote-haven-midi-manager_1.3.3-1_amd64.deb

3. Verify the SHA256 checksum

Advanced users should compare the checksum before installing.

sha256sum musicnote-haven-midi-manager_1.3.3-1_amd64.deb

The expected SHA256 is shown on the Downloads page and in SHA256SUMS.txt.

4. Install or upgrade the package

Install the .deb package with apt so required system dependencies can be handled cleanly. If an older Linux package is already installed, you can install this package directly over the older package; you do not need to uninstall first.

sudo apt install ./musicnote-haven-midi-manager_1.3.3-1_amd64.deb

5. Start the application

Open MIDI Manager from the application menu or start it from a terminal for diagnostics.

musicnote-haven-midi-manager

6. Choose folders in Settings

Choose separate folders for source files, organized output, archive and generated output. Select a SoundFont if you want playback.

7. Apply settings

Click Apply. The app confirms that settings were saved and applied. Then return to the Dashboard.

8. Build the source index

Use the Dashboard/source-index workflow so Search and Library Organizer can see the files.

9. Optional: uninstall or clean start

This step is optional. Use apt remove only when you want to remove MIDI Manager, or use the clean-start helper only for a deliberate troubleshooting reset of local user data.

sudo apt remove musicnote-haven-midi-manager

musicnote-haven-midi-manager-uninstall