Contradictory to what you said earlier, it is possible to swap & interchange specific elements of a sound file(s) if one so chooses without changing the entire sound file.
Good luck to the OP with that. I sincerely doubt that he's up to the challenge,
Further, anyone who does it for him, takes on a liability. Then, there's also the issue that MTH will not support it.
Regardless, I would be interested in seeing how well DCC works with a modified sound file. While I expect it wouldn't be an issue, one never knows.