AMIDI-Plug is a MIDI subsystem for XMMS, BMP, and Audacious. It processes MIDI files and sends their events to one of the available backends (currently ALSA, FluidSynth, dummy). With the ALSA backend, any hardware or software synthesizer, as long as it provides ALSA sequence ports, can be used to play MIDI with AMIDI-Plug. With the FluidSynth backend, AMIDI-Plug directly accesses the FluidSynth library for MIDI playback and sends the generated audio into effect and output plugins of the player. A dummy backend is also provided for testing and analysis purposes. Playback is fully functional: play, stop, seek, pause, song information are available.