I have an 08 dynamique megane with the updated list HU with a multi-tune point installed by renault and i must say it is def really good for use with the ipod, allows volume controls, skipping back and forth tracks etc!
However it only works through playlists, 6 at the most with a maximum of 99 songs... this is due to the fact that the multitune point connects in where the 6 dick cd changer connects, and the 99 song max seems to be because the cd player HU cannot count to triple figures!
Only prob i have with the multi-tune point is that there are no names of songs displayed, i think if it was connected to the renault upgraded mp3 cd player it would display the song name!