Describe conditions when you recorded.
It sounded like engine was idling. Yes?
No steering inputs during recording?
All fluids at correct levels?
Does it make the same sound with the serpentine belt removed? (You can operate the engine for several minutes with the belt removed - stationary only. This helps isolate noises that might be caused by pulleys or other rotating items on the front of the engine).
How many KMs on vehicle?