Drumstick is a set of MIDI libraries using C++/Qt5 idioms and style. Includes a C++ wrapper around the ALSA library sequencer interface: ALSA sequencer provides software support for MIDI technology on Linux. A complementary library provides classes for processing SMF (Standard MIDI files: .MID/.KAR), RIFF MIDI (.RMI), and Cakewalk (.WRK) file formats. A multiplatform realtime MIDI I/O library and a GUI Widgets libraries are also provided for Linux, Windows, and Mac OSX. Changes in v2.4.1: * New build option: USE_QT to choose among Qt major versions (5 or 6). Fixes ticket #36. * Fixed ticket #35: build with Qt 5.11 is possible again. * Vpiano: fix for a similar bug to vmpk ticket #74: crash in Linux. * Widgets: using buffer time in FluidSynth configuration dialog. * Fixed wrong licenses in several files. * Fixed defaults and ranges for the FluidSynth RT backend parameters, using the same values as the upstream library. * Fixed validation of parameters in the FluidSynth configuration dialog. * Widgets: Swedish translation updated. Thanks to Magnus Johansson. * Widgets: Czech translation updated. Thanks to Pavel Fric. Compilation minimum requirements for all platforms: * C++11 compiler * CMake 3.14 * Qt5 >= 5.9 or Qt6 >= 6.2 (experimental) Feature dependencies, for some platforms: * ALSA (Linux only) * PulseAudio (Unix) * D-Bus (Unix) * FluidSynth Copyright (C) 2009-2021, Pedro Lopez-Cabanillas License: GPL v3 or later Project web site https://sourceforge.net/p/drumstick Online documentation https://drumstick.sourceforge.io/docs/ Downloads https://sourceforge.net/projects/drumstick/files/2.4.1/