This is a plugin for Qmmp (1.6.0 or greater) which supports ORG file. (Cave Story's org and PXTone Audio File)

The following packages are required, including development headers, which some vendors split into separate packages:

• qmmp (1.x or 2.x)
• qt (5 for qmmp 1.x and 6 for qmmp 2.x)

To build, run Qt's qmake:

If you are building for qmmp 1.x, run:
$ qmake-qt5
And if you are building for qmmp 2.x, run:
$ qmake-qt6

Then build with make:
$ make

To install:
$ make install

This installs the plugin into Qmmp's input plugin directory. To install to a staging area, such as for packaging:
$ make install INSTALL_ROOT=/path/to/staging