I know there are two different (stock) CD changers available for the E53 X5. One is older and does not recognize MP3 file formats, the other does. In regards to the one that does recognize MP3 file formats, can it also handle folders? Or do the files all have to be in one large directory?

I.e. in my mountaineer, I can put in a burned disc with multiple folders under which the MP3s are listed. Can I do the same in the X5?