.GJM

.GJM file extension

This is the basic program to work with .GJM extension

MultitrackStudio

MultitrackStudio Audiofile, Mono, Lossless Compression

MultitrackStudio can be used to record and edit audio and MIDI tracks. MP3 can be recorded from audio sources in your computer. MIDI tracks can be recorded using a MIDI keyboard. You can also use the computer keyboard or even a touchscreen to record MIDI input... (more)

The program works with the following extensions: hdr, lst, mpt, aem, gjm and mdlkey