BMW CN1013887ID Owner's Manual page 36

PLAYING MP3 DISCS:
MP3 On Screen Display
When playing a MP3 CD, the name of the folder will be
shown on the monitor's top line. Names of songs will
be shown in columns underneath.
DVD Operation (Advanced)
–34–
MP3 Playing Order
When selected for play, Folder Selecting, or Track
Selecting, files and folders are accessed in order in
which they were written to the CD. Because of this,
the order in which they are expected to be played may
not match the order in which they are actually played.
For example, a medium with the following folder/file
hierarchy is subject to Folder Selecting, or Track
Selecting as shown in diagram.
CN1013887ID