I don't hear the noise you refer to. Sounds very quiet to me. All I hear is a low humming noise and you speaking. I think you would need to put a microphone close to the pump to pick up the noise you are referring to.
I do see the bubbles, though. Is this a new water cooled build?
Here are a couple of pointers:
1. If the radiator is in a vertical position, make sure the return hose is not at the top end. If it is at the top end any air in the system will collect at the top and form a pocket that will prevent the water from circulating properly.
2. Pump noise is either caused by air in the lines or by bad bearings. If you ran the pump anytime at all without coolant flowing through it you have probably ruined the bearings. Put coolant in the system before ever turning the pump on.