MidiYodi is a comprehensive MIDI file editor and player compatible with Windows, Mac, and Unix platforms. It provides an extensive set of features that allow users to examine the structure and details of MIDI files effortlessly. Through its intuitive interface, users can explore entire folders of MIDI files, view detailed information such as track count, instrument usage, song duration, tempo, and key signatures. The main window presents a clear overview of each track, complete with miniature note displays and meta information such as lyrics, markers, and tempo variations.

Beyond examination, MidiYodi offers powerful editing capabilities that enable users to modify MIDI files with precision. Users can add, remove, copy, and move notes, change velocity and pitch, and edit track properties including names, instruments, and volumes. The software supports converting between different MIDI file types and allows transposition of entire songs or individual tracks. Additional editing features include altering song tempo, removing sections, changing event channels, and saving selected tracks as separate MIDI files. These tools are complemented by bulk editing options for adjusting tempo, time signatures, and channel instruments across multiple files simultaneously.

MidiYodi also includes playback controls with tape recorder-style navigation, allowing users to play entire songs or selected sections on loop. The jukebox feature facilitates playlist management, enabling sequential playback of multiple MIDI files with customizable tempo, key, and volume settings for each track. Customization options include language selection, visual themes, default display modes for tracks, and MIDI output device preferences. This blend of detailed examination tools, robust editing functions, and flexible playback features makes MidiYodi a practical solution for working with MIDI files across different platforms.