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OpenMSX - base music set for OpenTTD

Table of content

1.0 About

OpenMSX is an open source base music set for OpenTTD.

2.0 Installing

  1. First, make sure that you downloaded and installed at least OpenTTD version 1.0.0 or later.

  2. Obtain OpenMSX: There are two ways, one easy (ingame download) and one complicated by downloading it yourself and installing it in the right place:

    1. Via ingame content download:

      • Go to the content download, and search for OpenMSX; it's found in the baseset category.
    2. Manually: download the latest OpenMSX package from its development homepage: homepage: Unpack the zip file into the OpenTTD 'baseset' directory (see section 4.2 of the OpenTTD readme for a detailed treatise on all data dirs OpenTTD recognizes).

      • An OpenTTD folder in your user account's home directory: Windows: C:\My Documents (95, 98, ME) C:\Documents and Settings<username>\My Documents\OpenTTD (2000, XP) C:\Users<username>\Documents\OpenTTD (Vista, 7) macOS: ~/Documents/OpenTTD GNU/Linux: ~/.openttd
      • The OpenTTD installation directory.
  3. In the main menu of the game, click the Game Options button. The Game Options dialog will appear.

  4. Select OpenMSX from the drop-down list below Base Music set if that's not selected already (bottom left of window). Close the window using the × in the upper left corner.

    Now that wasn't so hard, was it? Anyways, if you're having trouble getting OpenMSX to work, please file a detailed report on what you did, what error messages you got and where you got stuck at our bug tracker at or at

  5. Music might not start automatically. If music does not play yet, start a game and open the music box from the toolbar. Here you can control the volume, and start and stop the music.

3.0 Troubleshooting and bad sound output

  • Windows: Depending upon the hardware and the music driver used, OpenTTD may have problems to playback some songs without error or that it may happen that subsequent sound output is changed in a detrimental way. The latter is especially know to happen with the windows "dmusic" sound driver. You may want to try the "win32" music driver, if you have problems with Windows' default dmusic driver. Search your openttd.cfg for "musicdriver" and change the line to "musidriver = win32". Consult also the OpenTTD readme for available options and its known-bugs.txt for a more detailed and possibly more up to date description of Windows music driver issues.

  • GNU/Linux: If you cannot get music to play, it might be because your system does not support MIDI playback yet. Please refer to the manual of your Linux distribution to learn about how to get MIDI files to play.

4.0 Contributing and compiling from source

The OpenMSX source is available in a Git repository or as gzip'ed tarball. You can do a clone from

e.g. using

git clone

or obtain the tarball from

Prerequisites to building OpenMSX:

  • Git (only when not building from a tarball)
  • md5sum (Linux, MinGW) or md5 (macOS)
  • some GNU utils: make, cat, sed
  • unix2dos for convenient conversion of the text files
  • Python and you might additionally want a text editor of your choice and possibly a programme capable of creating and editing midi files.

On Windows: We advise to get a MinGW development environment. For more detailed instructions, see our guide at and the very extensive and detailed installation instructions on the MinGW wiki at

On GNU/Linux: Your system probably has most of these things installed, but if not, all of these things should be easy to install if your system has a software package manager.

On macOS: Install the developers tools. Git is easiest installed via macports: sudo port install git

The use of Git is strongly encouraged as only that allows to keep track of changes.

Once all tools are installed, get a checkout of the repository and you can build OpenMSX using 'make'. The following targets are available:

  • all: builds all grfs and the obm file
  • install: build and then copy OpenMSX in your OpenTTD music directory. Use Makefile.local to specify a different path
  • clean: cleans all generated files
  • mrproper: also cleans generated directories
  • bundle_src: create a source tarball
  • bundle_zip: create a zip archive of OpenMSX
  • bundle_bz2: create a bzip2 archive of OpenMSX
  • bundle_tar: create a tar archive of OpenMSX
  • check: checks the md5 sums of the built grf and obg files against those of the official release versions

Given the usual case that you modify something within OpenMSX and want to test that, a simple 'make install' should suffice and you can immediately test the changes ingame, if you selected the nightly version of OpenMSX. Given default paths, a 'make install' will overwrite a previous nightly version of OpenMSX. Mind to re-start OpenTTD as it needs to re-read the files.

5.0 License

The OpenMSX music set for OpenTTD Copyright (C) 2010-2021 OpenMSX Authors (see below or in the source in themes.list) and is licensed under GPL v2.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

6.0 Credits

OpenMSX is created by the following people:

Programming and coordination:

  • Ingo von Borstel (planetmaker)

Music critic and advisor:

  • kamnet


  • All 'Ezy Street' tracks
  • The Hobo
  • All 'Modern' tracks
    • Tistou Blomberg
  • Downtown cab ride
  • Skydive
  • Train filled with cash
  • Unidentified Flying Scotsman
  • Chugga Chugga Cha-ching
    • imuh3
  • Busy Schedule
  • The Fast Route
    • mimm
  • Modern Motion
    • Kyle Timmerman (Mr.Ksoft)
  • Trolley Trev
    • Keep on Rolling
  • OpenTTD journey
    • -lucas-

Song notes:

  • Moo Moo Boogie: inspired by Cow Cow Boogie by Benny Carter, Gene de Paul and Don Raye
  • Careless Love: is a traditional song in the Public Domain