64.2. LINE1, LINE2, LINE3 InputsThese 3 inputs for music sources cannot work simultaneously. You need to select one of them (orthe integrated audio player, considered as a fourth music source) using the selection keys on the frontpanel. These keys are provided with backlight to indicate the active source at any time.The selected music source (LINE1, LINE2, LINE3 or MEDIA, integrated audio player) has a levelcontrol (MUSIC) that allows you to adjust the output volume and, therefore, the mixing with the othersignals that are active at that time (MIC1 and/or MIC2/LINE).The BASS - TREBLE tone controls of the MUSIC section also act on the selected music input(LINE1, LINE2, LINE3 or MEDIA, integrated audio player).4.3. Integrated Audio Player (MEDIA PLAYER)A USB memory device or a SD/SDHC memory card can be used as mp3(*) file storage media forplayback. When you connect one of these storage media, the unit automatically analyses it and, ifcompatible for playback, enables it as player source (its LED indicator is permanently lit (15, 17)). Whilea device is enabled, any other device inserted into the unit will be recognized (flashing LED, if it containsreadable data), but not enabled: to enable a SD card when the USB reader is already enabled, you mustfirst disconnect the USB device to insert the SD card and enable this last one (or vice versa).Controls and connectors for the integrated audio player or MEDIA PLAYER are on the rightsection of the front panel: Connector for USB memory devices (16) Connector for SD/SDHC memory cards (14) Forward and rewind keys (11 and 8):o A short press, while in playback mode, skips playback to the next/previous tracko Pressing and holding the key FAST FORWARD or REWIND the playback of thecurrent track Playback key, PLAY/PAUSE (10):o The first press activates the playback mode of the tracks on the active device(continuously lit LED)o The second press activates the playback pause mode of the tracks on the activedevice (flashing LED) Stop key, STOP (9) Repeat tracks/folders key, REPEAT (12):o By default (LED off), the device plays back all the tracks in infinite loop modeo The first press activates the repetition of the current track (continuously lit LED)o The second press activates the repetition of the current folder (flashing LED)o A third press returns to the default mode (LED off) Random play key, RANDOM (13)o The first press activates the random playback mode of the tracks on the activedevice (continuously lit LED)o The second press deactivates the RANDOM mode (LED off)FAT16 and FAT32 are the compatible formats of the storage media for the player. The player canmanage up to 65354 file folders and 65354 subfolders, with a maximum of 8 levels of sub-folders(folders within other folders)The playback order of the tracks is alphabetical in normal mode (not in RANDOM mode) for thefirst 100 tracks of each folder and for the first 100 folders. Beyond these limits, files are still playing in theorder that has the file allocation table (FAT) of the storage media.(*) Note: Refer to chapter 11. (TECHNICAL CHARACTERISTICS) for the technical detail of themp3 formats supported by this unit.