When accelerating there is a hum sound at 80 MPH and above?

It sounds like you have a front wheel bearing hub that is starting to go out but to be sure can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. You can upload it here with your response. Here is how to change out the front bearing hubs in case you need them. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.