Installation instructions
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Download and run the setup program at , which embeds everything you need.
If you get a Windows Smart Screen alert
Windows Smart Screen blocks the program NOT because it is a malware (it is NOT!), but just because JJazzLab is new, so Windows security servers don't have enough statistics to evaluate its "security reputation".
Once enough users will have successfully downloaded and installed it, Windows Smart Screen will not block the program anymore.
You can find more explanations in this .
You need to manually install FluidSynth first.
I strongly recommend via : brew install fluidsynth
Mac computers with Apple Mx processor:
Download the .pkg file at and open it.
Mac computers with Intel x64 processor:
.pkg files are not always supported on old MacOS versions, so we propose a .zip file, a basic solution but compatible with many MacOS versions.
Execute file bin/jjazzlab to start JJazzLab.
If you get a security alert
Using the Finder, select the JJazzLab package, ctrl-click menu, Open, this will give you the choice to open the application in spite of the security alert.
To fix file permissions: chmod a+rx bin/jjazzlab jdk/bin/java
JJazzLab packages are only proposed in selected formats (.deb, .rpm, ...).
JJazzLab packages declare a dependency on an appropriate FluidSynth package. So the package manager should automatically install it if it's not already present on your system.
The .tar.xz package should work on any Linux distro (x64).
Runbin/jjazzlab
libfluidsynth.so.3 in a non-standard directoryOn Linux, JJazzLab uses FluidSynth via its shared library libfluidsynth.so.3 (or libfluidsynth.so). The file is expected to be in one of the standard directories:
/usr/lib/x86_64-linux-gnu, /usr/lib, /usr/lib64, /usr/local/lib, /lib
If you successfully installed FluidSynth (>=2.2.0, but avoid 2.4.4 which has a bug) but JJazzLab can't load FluidSynth, it's possible that libfluidsynth.so.3 was installed in a non-standard directory. Once you found the file location (for example in /tmp/lib/libfluidsynth.so.3), you can tell JJazzLab where to find it:
In the JJazzLab installation directory, edit file etc/jjazzlab.conf
Add -J-Dfluidsynthlib.path=/tmp/lib/libfluidsynth.so.3 at the end of the default_options variable
Start JJazzLab
JJazzLab embeds its own Java Runtime Engine. You don't have to deal with Java at all. Trying to use a different JRE/JDK will certainly generate problems.
The Flatpak package is NOT a JJazzLab official package, it is kindly provided by a JJazzLab user. Therefore we do not provide support for it. If you encounter problems, please try the other packages proposed on this page.
Download the .zip file at and extract it (open file with Finder)
If JJazzLab does not start, make sure that files bin/jjazzlab and jdk/bin/java have read and execution permission ('xr'), as shown below:
If FluidSynth makes some "crackling" noise, make sure your Linux is optimized for audio applications:
Download the relevant package for your distro at , then open it with the relevant package manager (examples below) :
Install FluidSynth (>=2.2.0, but avoid 2.4.4 which has a bug) manually:
Download at and extract the JJazzLab .tar.xz file, e.g
tar -xf JJazzLab-4.0.2-linux-x64.tar.xz
Make sure that all extracted files have read permission ('r'), and that bin/jjazzlab and jdk/bin/java have execution permission ('x'), as shown below:
To add read+execution permissions: chmod a+rx bin/jjazzlab jdk/bin/java
