I agree with thedweeb. Sounds like your torque converter. If it is and you address it now you might save your self a couple thousand dollars. I had a whine in N and D, which increased with the RPM's and progressively grew louder until randomly one day it got real loud and crapped out. See my thread "Horror from underneath" Someone posted a link to a video on it about the supercharger noise they had. Its identical to the one I had

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