I have a Renault Laguna Initiale (2005) fitted with a Cabasse Auditorium Carminat SatNav unit. The handbook says that it has an audio aux input. My Dealer does not know whether I can connect an mp3 player directly to this aux input. Anybody have any experience of this unit? Can I connect an mp3 player directly to it or does it need an interface? Anybody know the pin-outs for the aux connection? Thanks!