General Maintenance & Repairs - What is this noise?????

I think its the a/c or serpintine belt.


http://www.youtube.com/watch?v=zqBaSklvzS4&list=UUIn5YI3LUaXKKnxmMhgE2Dg&index=1&feature=plcp

Its a pulley bearing. Pull both belts off and spin your tensioner and idler pullies. Willing to bet it's one on the a/c bracket.