XMF

Abbreviation for eXtensible Music File specification. XMF is a relatively new (1999) family of music file formats adopted by the MMA for gathering together into a single file the media assets (and/or links to external media assets) required to render a MIDI note-based piece (or suite of related pieces) in a computer-based player (or possibly an instrument) with consistent audio playback across many players and platforms. Type 0 and Type 1 XMF formats (approved by the MMA in 2001) employ both standard MIDI files (SMF) and custom DLS files with general MIDI instruments. More XMF information is available and the MMA website.