The RMF (Rich Music Format) file format is an audio file format from Beatnik that can include other file formats such as Waveform Audio File (WAV), Audio Interchange File Format (AIFF), Musical Instrument Digital Interface (MIDI), MP3
and others. The RMF file format allows simultaneous storage of audio and MIDI data as well as encryption of the data. It is not documented and can only be created with an editor. An interesting alternative to the RMF format is the Extensible Music Format (XMF) for encryption and copy protection.