[. . . ] Preparing your MRM-500 Disk: Creating a Configuration File You can save a Configuration File on your MRM-500 Disk, which determines the MIDI File Format (0 or 1) and software type (MRC-300/500 or Super MRC). [. . . ] MIDI File Format 1: All of the MIDI data is contained on multiple tracks (works with many computer-based sequencer programs, but not completely reliable with all products). IMPORTANT NOTE - All the above products should be used with Double Density Disks only. When loaded, the window will show: 1 MRC > MIDI File 2 MIDI File > MRC 2) Hold SHIFT and press MODE. 4) Dial the song you wish to convert, or select ALL SONGS to convert the entire disk. If you choose one song, the unit will convert it, then prompt you to do the following: a) Insert a Standard MIDI File, MRC or SUPER-MRC - formatted disk, then press ENTER. When the above steps are completed, the song(s) will have been successfully converted. IMPORTANT NOTE - MIDI Files are generally larger in size than the original MRC Song Files, therefore, you may encounter a situation where there is not enough room on the disk to complete the conversion. [. . . ] When the above steps are completed, the song(s) will have been successfully converted. IMPORTANT NOTE - MIDI Files are generally larger in size than the original MRC Song Files, therefore, you may encounter a situation where there is not enough room on the disk to complete the conversion. [. . . ]