A more complex interface will provide sliders for some standard parameters such as volume and pan.ĮDIT: As far as I can tell, FluidSynth is supposed to be threadsafe. Perhaps REAPER can provide a native interface to the FluidSynth library, which can be downloaded as a separate dll or dylib, similar to FFmpeg? At the simplest, the interface simply needs to load SoundFonts into FluidSynth, and the playback can be controlled by the MIDI editor. * It is available as a shared library that can be used in other programs, and is already used in VLC, MuseScore and some free DAWs.ĪFAIK, it is not available as a VST in Windows, yet. * It is one of very few such players that have implemented the full, updated SoundFont 2 specifications. I don't know what % of users are interested in SoundFonts, but there are dozens of thread asking about SoundFonts and other General MIDI players - the most recent just a few days ago: GM player comes with reaper?.įluidSynth is a free, open source soundfont synthesizer for Window, Mac and Linux: