MT9 file extension - Music 2.0 song file
What is mt9 file? How to open mt9 files?
File type specification:
The MT9 file extension was used for an audio format developed by Electronics and Telecommunications Research Institute and was commercially used by Audizen.
The format was an attempt to replace MP3 format in Audizen programs and devices. It has separate controls on the sound volume for each musical instrument, such as guitar, drum, base and voice and has the ability to package entire albums into a single file.