I just replaced the front bearings on my 91 camry. after I put it all back togeather and the wheel is wobbly and something is rubbing loud on the rotor. when I garb the hub I can wiggle the roto. the tie rod also wiggles

could be bent rim
loose tie rod end
bearing not adjusted correctly
wheel not centered properly on the hub
wheel nut holes elongated

For the wobbling. Can you feel the wobbling in the steering wheel? If so. 1 Check tires for knots or steel breaks, 2 bent rims. 3 Check lug nuts, Also check oil-grease in front end. Humming could very well be dry front end or bearing.

When they do that job they replace the bearing. The Bearing has to be pushed in all the way in any car or it can mean the brake parts and other will have room to move.
If you get a little weight on the car an push it side to side can you tell if the wheel is wobbling top to bottom? If the wheel can move from perfectly vertical you'll know for sure they didn't tighten something up all the way.
Otherwise the answer is I don't know. If there is play in the wheel thats not safe and the axle guys owe you a look because the job wasn't done right. I suppose there are a few other things that could go wrong to make noise and many are minor but check to see if you've got "play" in it. You may need a helper so you can really get an idea of what's moving, but if you can see it wobble thats bad.
If the wheels screwed on nice and tight a little noise won't kill you but it may mean that they didn't replace the bearing when they should have. Other considerations are wheel nuts and brake parts.

I would have the front wheel bearing adjustment checked first as if they are loose the rotor will be rubbing on the pads and the vibration will be wheel wobbling on the loose bearings Unless you replaced the bearings with new ones then they will fail especially if the adjustment was too tight and too much grease was used.

Possibilities are:

1. Bad wheel bearing
2. Bad tie rod
3. Bad ball joint
4. Bad strut
5. Loose lug nuts

Most cases it's a wheel bearing but since you're getting a loud noise too, it could very well be a bad ball joint or tie rod end.

Check the wheel hub bearing, jack so the wheel is off the ground, if the wheel can be moved in any direction 360 degrees, then the bearing is bad. If the wheel will move by pulling up and down then it's the balljoint, just back and forth, it's ths tierod.

May be a wheel bearing and one can test this:  Raise vehicle and spin wheel while you hold your hand on the strut-spring.  If you feel a vibration and is different than the other, probaby is your wheel bearing.  Typically a wheel bearing will make noise when turning one way, and less or no noise when turning the other - doesn't have to be a sharp turn.  

I, however, suspect that (assuming its drum brakes and not rotors) that the springs holding the brake-pads on let go or something is in the drums - perhaps just corrosion or around the out lip of the drum where it contacts the backing plate - or the backing plate (Steel disk behind the drum) itself is rusted and bending into the brake drum, or perhaps you just need brake shoes.  Try putting on your E-brake but not too tight and move car back and forth several times, then put a little tighter and do again - this may cure the problem some, but sounds like you need rear brake adjustment or cleaning.
If it's a disk brake - check bearing in same way, or look for something rubbing on the inside of inner fender around wheel.
Good luck.
East Coast Canada Rocks!!!
:)

this could be a bad inner axle joint check to see if the axle boot on the left side is torn or missing also check the wheel bearings and tie rod ends by jacking up the front of the vehicle one corner at a time and grab the tire at the 9 o'clock and 3 o'clock position and wiggle it back and forth looking for excessive movement in the tie rod ends then reverse your hands to the top and bottom of the tire and try moving it from top to bottom checking for excessive wheel bearing movement it shouldn't move in or out at the top or bottom

disc pads worn out [grinding noise when braking] or noisy or loose wheel bearings!
get it fixed ASAP!
Cheers Rob

Possible wheel bearing failure, ball joint failure or tie rod end failure. Does the wobble seem to be when tire is moved toward center of vehicle on top and bottom or front and back??