mp3tomid_chung is a free real-time MP3 to MIDI converter designed to transform MP3 audio files into polyphonic piano MIDI data. Developed using FreeBASIC with the fbsound library, it utilizes the MAD free MP3 decoder to process audio accurately. The converted MIDI data can be sent directly to a selected MIDI output port, enabling seamless integration with MIDI recorders for file creation or playback through the PC's MIDI mapper.

Ideal for piano-focused music, mp3tomid_chung works well with recordings such as Bill Evans's piano pieces and Pat Metheny's solos, although it can be tested with other genres. The software supports real-time playback of MP3 files as if they were MIDI files, allowing users to listen through connected MIDI instruments or expanders. It also features the ability to export the converted MIDI data into standard MIDI files for further editing or use.

Designed to run efficiently even on low-power devices like netbooks, mp3tomid_chung offers practical functionality for music enthusiasts and producers. A recent update added switchable quantization, enhancing the accuracy of MIDI note timing. The tool is commonly used alongside midipiano_chung, a piano expander and recorder, making it a powerful option for those seeking to convert and manipulate piano music from MP3 sources in real time.