sound activated led

Hi,

Hoping this is faily simple, I want the build a simple circuit to test an audio output.

Upon any audio being detected I want the LED to light, fairly simple I hope! I am going to plug this into a headphones output.

Editted to add: Im a complete novice at this, would appricate any help including circuit diagrams, components etc... I can manage the soldering, just

Thanks
mhm