[Derkperk]

Likely u joints.
Jack up the front. Spin the tire to see if it makes the noise, if it does suspect wheel bearing. With the wheel turned to lock one direction, manually spin the tire, turn opposite direction, spin tire. If there is resistance or noise, suspect u joint.

 

[Derkperk]

Well that eliminated the ujoint. Drive shaft joint maybe? I'd still jack the jeep up and start spinning the wheels. Are the lugs nuts tight? Seriously.