Hello, I have some great news...
I was browsing around planet renault and I found this article for VDO radios installed on various Renault models.
Description says 'AUX - IN adapter for all VDO - DAYTON devices, with the option of AUX-IN in the menu.'
It is a simple adapter that connects in the back of the tunner and allows us to connect on the other end a portable MP3 player, or whatever stereo device you want.
However there is other one,
and this one is for 'AUX-IN adapter for Renault types Clio, Megane, Scienic, Espace, Laguna with the radio ex factory "tuner list".'
I'm going to find out which one is better suited for which radio model, and let you know later on ok?