If you choose to burn an MP3 CD, the order of the tracks will be exactly as the order in the listing window. By default, any burning application will arrange the files by letters, from A to Z. This means that folders come first and then the files. If you burn them in this order, then this is the way the files will be available. However, it also depends on the playing device. For example, car stereo players have the possibility to use shuffle or playing by different filters.