"Remix"

I've been trying to "remix" an old song by Peter Buchak, the Retron theme song "Insane," and I'm having a devil of a time doing it. By the way, I put "remix" in quotes because I'm not using any of the original material, and in fact I doubt if most "remixers" (aka "DJs") do either. However, while this term strikes me as a bit of dance culture silliness, it's probably the best to describe what I'm doing. If my computer wasn't so rickety, it would probably be a lot easier and more fun.