Earlier today, my radiator hose came loose and I lost a lot of fluids. It caused my engine to run extremely hot (above redline). I tightened the hose back and refilled with antifreeze/water. Everything seems to be okay, but there is a much more noticeable tapping around the engine. This tapping was there before, but it was very subtle. I noticed the slight tapping before, but figured it was just the 1.6 rockers. Any ideas to what this noise may be? Exhaust leak, rocker loose, etc. Any help would be appreciated.

Here is a video of the car idling…(car is inside and engine is cold so idle is ~1300)
http://media.putfile.com/94LT1

edit: here is a better video taken outside this mourning (outside, car is up to operating temp. idle ~950)
http://media.putfile.com/outside-idle-950RPM

Kearn