I'm trying to create a new feature for my MP3 Organizer. This will allow the user to create CD-book with an index of the MP3s saved on the CD (prepared to be printed double-sided and book-sized).

The problem I cannot solve is with the index itself. I thought my car-stereo would access the files alphabetically. So, I made the index this way. So, my printed index could say the file I want to here is tracknumber 3 from the folder 12 (12.3), but my stereo finds this song at 12.5. Obviously... the order I thought and the one the stereo is using are not the same.

Does anybody know how are they sorted or how to get the same order the player does?

TIA,