Just bought my son a 2013 Elantra sedan. It has an usb port. I put a usb drive in that I use in my Honda civic all the time and the elantra only seems to play 5 same songs out of the 5000 that are on there. I do not have any playlist or "files" separating the songs. This same flash drive also works fine on my wife's prius's usb port. Could anyone be so kind as to tell me what I am doing wrong or if I need to get a different flashdrive and make playlists on it or what.....Thanks.........I'm a newbie if you couldn't tell.