You can then find the Jack client in `clients/sfizz_jack`.
Just specify an `.sfz` file as a parameter and you are good to go.
The client will forcefully connect to the system output, and open an event input in Jack for you to connect a midi capable software or hardware (e.g. `jack-keyboard`).
If no Jack server is already started it will start one with basic options.
### Possible pitfalls and alternatives
If you already cloned the repository without the `--recursive` option, update the submodules manually with
```
git submodule update --init --recursive
```
You can build with `clang`, although in that case the CMakeFile defaults to using `libc++` instead of `libstdc++`.