Ok... Now, what does sys-ex dump mean? I have that function in my technics? Could I somehow transfer the song to the computer by using that function? And then use the gn-midi to adjust drum track, and then save it to a general midifile and then save the song to a disk and use it in roland g800?

Or should i just connect my technics to computer, record the midi data what technics sends when it plays the song and transfer that to a GM song?