SoundFont MIDI Player offers a comprehensive MIDI playback and synthesis experience, tailored to users who want real-time control and sound enhancement. It supports automatic loading of soundfonts, making it especially compatible with popular sound cards such as SoundBlaster Live, Audigy, and X-fi. Since version 2.0, the BassMIDI output mode has expanded these capabilities to a wider audience, enabling seamless soundfont integration across devices. The player supports a wide array of MIDI formats including karaoke and module files, and it also features a virtual piano with chord mode for live input.

Designed with flexibility in mind, the player allows full configuration of MIDI input and output ports, real-time program and bank changes, channel muting and soloing, as well as tempo and pitch adjustments during playback. Advanced features include support for SysEx messages, MIDI over networks, and scale effect settings to transpose notes according to different scales. Users can enhance their workflow with VST instrument and effect plugin support, and utilize tools like the MIDI event viewer/debugger for detailed editing and troubleshooting. The player also supports embedded SF2 soundfonts and instrument definition files, enhancing preset management and compatibility.

Regular updates have improved compatibility, stability, and user interface options. Recent enhancements include additional support for various SysEx volume and mute controls, refined MIDI file seeking, and optimized high-DPI scaling for Windows 10. The software also offers recording capabilities to wave, MP3, and other formats, plus a spectrum analyzer for visual feedback. Its compatibility extends across multiple Windows versions and even through Wine on other platforms, making it a reliable choice for MIDI playback and synthesis in diverse environments.