What is causing this whining noise like bad bearings or CV joint?

I have a 2001 Subaru Outback wagon, 2.5L, auto, 63000 original miles. New tires and alignment done and left front outer wheel bearing changed and I'm still having this whining noise from the front, as if nothing was done. My mechanic is stumpped and advises to continue driving until the noise gets worst before spending more money or changing something else. Suggestions?
What is causing this whining noise like bad bearings or CV joint?
sometimes a noise HAS to get worse to pinpoint a problem,,, however he should be able to raise the vehicle disengage traction control and run in gear to pinpoint that type noise.... still sounds like bearing ..does the noise change when going around curves? if so... maybe bearing on other side or defective bearing just been installed....or technician ERROR damaged bearing
What is causing this whining noise like bad bearings or CV joint?
iam just guessing here, but what about a cv joint, like i said, its just a guess.
ball joint

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