There are 2 file types use the .XMI file extension:
1. XML Metadata Interchange File
File created in the XMI (XML Metadata Interchange) format, an XML file format most commonly used for exchanging UML diagrams; stores model design information in a standard XML format; used for transferring design information between software programs.
The XMI standard is maintained by the Object Management Group (OMG), the creators of the UML specification.
Updated: December 28, 2010
2. Extended MIDI File
Variation of a standard MIDI file that contains "time quantized" MIDI information; each note is exactly in sync with a certain beat, such as 1/16, 1/32, or 1/64; XMI files are usually a little smaller than a regular .MIDI files since they do not need to store as much timing information.
Because XMI files are similar to MIDI files, they do not contain any actual audio data.
Updated: August 10, 2009