TD-12 Driver e aggiornamenti SMF Player for Windows This is an application for playing back Standard MIDI Files that can be used in place of a full-featured sequencer or librarian program. You will need a MIDI interface on your computer to use this program. SMF Player for Mac OS X v10.6 or earlier This is an application for playing back Standard MIDI Files that can be used in place of a full-featured sequencer or librarian program. You will need a MIDI interface on your computer to use this program.