i have had this stereo for a couple of years and the usb wont play an F-Drive properly.using the remote it wont change the song. it just goes back to the beginning. on the stereo i can only FF through the entire song. it wont skip songs either . it has worked before always intermittent.on one F-drive they are all MP3 in one folder on another i just synced a list off windows media. Kenwood could not help me. can you.