Worst case of spoke noise I ever heard. the motor is completely normal.
Uh,, put diplomatically as possible, you have a bit to learn about wheel maintenance.
Its possible though, that damage from running loose has damaged the spokes or the rim to the point where the fix is new wheel build. All that noise might be the crack in the rim or something like that. A new kit typically will stretch out the spokes some as the first 100 miles go by, then its time to tighten up, and get it true.
Personally, I like the wheel to talk a little bit, it means I did not overtighten the spokes enough to start breaking them, or ripping them out of the rim. But yours sound still too loose, or something is cracked in the rim.
Start by tightening all the spokes about the same, by sound. Not a dull thud, nor a high c ping. Just a middle note. If the wheel is badly crooked at that point, really bad, your rim is toast. its bent to shit. If its within a quarter inch of straight, that you can work out, but not by over loosening any spokes. To get it out, you might have to loosen one side, but tightening the other spoke brings that spoke tight again. Takes time, practice, and above all, never turn a nipple more than a half a turn at a time.