USB port 49and all other compressed filescannot be playedMaximum folder structure depth:11 levelsMaximum number of files that canbe saved: 1000 filesWMA files with Digital RightsManagement (DRM) from onlinemusic shops may not play correctlyor not at allApplicable playlistextensions: .m3u, .plsPlaylist entries must be in the formof relative pathsPlaying saved audio filesDepending on the auxiliary deviceconnected, select a folder (MP3player, USB drive) or a playlist(portable digital music player).Once connected, it is only possible touse the controls and menus of theInfotainment system to operate theauxiliary device.The operation of data sourcesconnected via USB is generally thesame as for an audio/MP3/WMA CD3 40.R15 BT / CD15 BT - Playingmusic via USBMP3 player / iPod / USB drivesThe system detects the auxiliarydevice when a USB device isconnected and the current track isdisplayed automatically.When a new auxiliary device isconnected, the first track in the firstfolder is played automatically. Whenreconnecting the device, thepreviously played track is resumed.Selecting a trackTo select tracks directly (and changefolders), first access the auxiliarydevice menu structure by pressingthe OK rotary knob during playback.Select tracks and change folders byturning and pressing the knob.CD30 BT - Playing music viaUSBMP3 player / iPod / USB drivesThe system detects the auxiliarydevice when a USB device isconnected and the AUX-USB menu isdisplayed automatically.Selecting a trackSelect tracks directly by turning andpressing the central rotary knob.By default, albums are listed inalphabetical order.If a USB drive is connected, all thefolders will be at the same level on thetree structure.Depending on the auxiliary deviceconnected, you may refine yourselection by folders and files, or by acriteria search from the following:■ Artists■ Albums■ Genres■ Playlists■ Songs