The 'dot' TM file is the actual KN7000 Sound File, which should be loaded into the keyboard's Sound Memory.
Easiest way is to copy the file from your PC to a Floppy disk and then insert the disk in the KN7000 drive and load as normal......
The new sound can then be found by pressing the MEMORY button in the SOUND GROUP.
You won't find or need any other programs to use or read the file.