Hi everyone. I am getting a 2004 325i, and I am interested in getting the Navigation System. I have been told that the DVD stays in the trunk, and I will be able to play regular CDs with the Navigation System in the dashboard. I have been told by others that with the nav system, the only way that I can play CDs is with a CD changer. Can anyone confirm that? Also, the nav system screen is 16:9 ratio (does it play DVDs???) if it does, do you load the in the cd slot or take out the map dvd in the trunk? Thank you.