If you burn your own MP3/WMA disc on a personal computer:
• Make sure the MP3/WMA files are recorded on a CD-R or CD-RW disc.
• Do not mix standard audio and MP3/WMA files on one disc.
• The CD player is able to read and play a maximum of 50 folders[/color], 15 playlists, and a combined total of 512 folders and files[/color].• Create a folder structure that makes it easy to find songs while driving. Organize songs by albums using one folder for each album. Each folder or album should contain 18 songs or less[/color].
• Avoid subfolders. The system can support up to eight subfolders deep, however, keep the total number of folders to a minimum in order to reduce the complexity and confusion in trying to locate a particular folder during playback.
• Make sure playlists have a .mp3 or .wpl extension (other file extensions might not work).
• Minimize the length of the file, folder, or playlist names. Long file, folder, or playlist names, or a combination of a large number of files and folders, or playlists can cause the player to be unable to play up to the maximum number of files, folders, playlists, or sessions. If you wish to play a large number of files,
folders, playlists or sessions, minimize the length of the file, folder, or playlist name. Long names also take up more space on the display, potentially getting cut off.
• Finalize the audio disc before you burn it. Trying to add music to an existing disc might cause the disc not to function in the player.
--From the Manual