Transfer the file "Code_7_by_G-Fellow.d64" to a C64 floppy disk and run it on a 
real Commodore 64 with a recommended SID 8580 chip, load on the floppy disk the 
file "Code 7.exe" and start it with "RUN" or run the "Code 7" tune on a 
Commodore 64 Emulator preferred VICE Emulator v2.1 or higher, with Sound 
Settings 44100 Hz, Sound Buffer Size 100msec - SID settings, 
SID Engine/Model 8580R5 3691(reSID-fp).

Load example: 

- Load"CODE 7.exe",8,1

- after loading write "RUN" [RETURN]