Driveshaft vibration HELP!!

[SICKBIRD]

So I bought my car a week ago it is a 93 TSI AWD and I noticed whenit is just running and not in gear if I revved it past 5000rpm it had a noise coming from under the car like a heat shield vibration so I checked all the heat shields and pulled most of them off it still made the noise so I got underneath it and had a friend rev it for me the noise is coming from the driveshaft and even if I put my hand on it the noise doesn't stop. It also does it when in gear and driving in all gears I'm thinking something to do with the transfer case but not sure? Does any one have any idea's?

 

[j-jamrod]

check the driveshaft bracket shake it make sure is no to losse, if is tight check the universal joints in the drive shaft, if all this are ok, pray that the rear end is ok

 

[SICKBIRD]

I have checked all of those things and they are fine