Sorry - forgot to say - I got the CIM update today!!!!
The MP3 works no probs in the dash CD and the dash DVD. It displays the names of the songs and even gives you more options to display the other details (from a check box). Once I tick this it shows me the name of the artist etc which was saved with the song - like for example "Nirvana - Smells like teen spirit". Some of the other options are Random All and Random Directory.
If yoiu read other forum threads, they give screen shots so this may help. on the down-side, other threads also advise that it is a Sept- onwards thing - but it is worth a try.
325i, Black Sapphire, 6sp Man, 18” Ellipsoid, Black Dakota Leather/Aluminium, Sunroof, PDC Front/Rear, Electric Seats, Professional Navigation/iDrive/TV, 6 CD Stacker, Oct 2005