I own a Megane 2004 with Tunerlst HU /w indash changer. Since it doesn't support MP3 cd's, I am searching for RENAULT CD/MP3.

Questions are:
1) Is there any Tunerlist HU that supports MP3 disk
2) How can I change it for Updatelist HU and still have steering wheel controls and dash display (or even Expertlist or Cabbase)
3) Can I connect any Renault 6-in-dash MP3 changer to my head unit, just to change it, without changing HU.
Any ideas???
Thanks!