The line:
// - Sound Database -
Is just a remark line and is not intended to imply the need to chnage it.
Just enter the file names in between the quotes on these lines.
s[n++]= "Some.wav"
s[n++]= "OrSome.mid"
s[n++]= "Another.wav"
s[n++]= "Again.mid"
s[n++]= "And.wav"
s[n++]= "sound.mid"
The actual file(s) should reside in the same directory as the file the script is being called from. Although untested you might be able to place the path there as well allowing you to keep the files in their own directory.