I've recently bought a Duet but i'm confused on a few matters. - The lights on the front frequently light up all the way until red when i play various songs in my iTunes, as if to indicated clipping. is this normal, are the tunes clipping or does the Duet just do that? -After the 'clipping' happens, the red lights remain on, even when music isnt being played - is this normal too? - Finally, when i start up my mac, the Duet makes a nasty clicking noise a few times...not sure if this is a dodgy one or i'm being paranoid? it's literally 48 hours from the shop. Any help would be much appreciated.