It is recommended that you have as many directories as possible on a root level as
subdirectories will not be recognized by the car stereo. The GROM itself will enumerate subdirectories and turn them into a flat list of tracks.
If filenames in a certain directory begin with digits, they will be played in ascending
order based on the order of those digits in the filenames. For example: \1-Dance\My songs\
Track.mp3 (will play first according to the number )
If filenames begin with letters, they are played in ascending order of the file creation
If root directory starts with the number, the directory will be assigned to a respective
All MP3, WMA, iTunes, and OGG tracks will be enumerated and found once you select the appropriate disk.
The GROM USB adapter has the following functionalities: Every directory in a root of the USB portable data medium becomes a virtual disk. Please note: directories with non-audio files (e.g., pictures, documents) located in the root will be recognized as empty virtual disks. All audio files within the root directory are enumerated and treated as TRACKS. Only 6 disks are supported on most car stereos. Up to 99 disks are supported on stereos with DISK UP and DISK DOWN buttons. The following operations are supported by the GROM USB:
Change virtual disk/playlist
Change tracks forward and backward
Change +/- 10 tracks in SCAN mode
Display track # and track title where available
Display current track playing time
Random and Repeat functionalities
Restore last positions for up to 4 USB sticks
Restore last playlist positions in up to 20 virtual disks
Once the GROM USB is active and playing, the following operations are available: playback will switch to the next song and the car stereo track number will represent the song number from the current playlist. playback will switch to the previous song and the car stereo track number will represent the song number from the current playlist. : the GROM will start fast forwarding the current track forward. The time on the car stereo will represent the actual position within the audio track. the GROM will start rewinding the current track backward. The time on the car stereo will represent the actual position within the audio track. when the stereo is switched to the CD changer mode, the GROM will automatically start playing the last track played on the current USB stick from the last played position. allows the skipping of tracks by 10 when set. The next track will jump to current track +10. The previous track will jump to current track -10. This is helpful for skipping through an entire album (usually ~10 songs) selecting Disk 1-6 or using Disk ^/Disk v will cause the GROM to change the current root directory to the appropriate one based on the disk number.