Squealing

My guess since I am not able to hear the noise for myself that it can be the power steering belt causing the squealing noise. My other guess would be maybe brakes. Some of my customers will actually come in and say "squealing" but its more like a metallic screeching. If it doesn't sound like that, then its probably the belt. Check to see if the belt is worn or feels loose. If it looks worn or cracked, replace it. While you're in there, check the other drive belts as well and if you haven't gotten a timing belt service done yet, I would highly recommend performing the timing belt service since removing and replacing the drive belts are usually already factored into the repair. I would also just remove the tires and take a peek at the brake pads to make they're not below specifications. If they are, the warning clip would be rubbing on the rotor. The loud humming noise can very well be the wheel bearings going bad. Another thing it may be are choppy tires. By choppy tires, I mean if you take your hand and rub the tread of the tire on the inside, middle, or outside and it feels wavy as if your hand is going up and down. That will definitely cause a noise that may be interpreted as a bad wheel bearing. The way I like to check wheel bearings is to jack up the front end, have someone go inside the vehicle, make sure the parking brake is applied, and put the vehicle in drive while another person stands by the front tires listening to which side is louder, if you can't determine, try holding the strut where the bottom of the coil spring is and feel for roughness. Compare that feeling to each side and the side that does not feel smooth is the bad side. Best of luck and let me know what you find.