The MID file format was developed to transfer data in between applications for musicians and audio developers, allowing them to play multiple files from a single controller. The files contain specifications for various parameters like notation, pitch, velocity, and control signals. All of these help in tempo control for multiple devices. The MID file format offers compactness, ease of modification, and choice of instrument. Use SoundFonts for high-quality sound Detailed manual. When the conversion is completed, the new song shows up in the list of songs (screen shot below). Note the difference in size. The MP3 version is 3.4 MB in contrast to the WAV version, which is 24.9 MB. The MP3 version is playing in iTunes. I can find this MP3 version by navigating to where iTunes stores its files and simply copying the MP3 version to wherever I want. Insert a USB storage device to the USB TO DEVICE terminal. election see this page convert .midi to .mp3 How do I get midi to mp3 converter The program starts converting MIDI to MP3 . All functions of the window will be disabled, except the big button that will become "Stop". By clicking it you can cancel the process any time. The program will stop immediately, leaving current MIDI file and all following ones unconverted. If program's window is big enough, you will be able to see progress bar while converting. Windows Vista compatible. Website URL: http://www.magicaudiotools.com/convert-midi-to-mp3