I have a 32GB USB flashdrive filled with folders containing mp3 tunes. The system allows me to easily pick a folder and play the mp3's. My problem is I have to press the switch on the steering wheel to go to the next tune. In my other cars, after one selection is played, the next plays automatically. I suspect it must be a setting but I haven't been able to find it in the manual or by experimenting with the controls. Anyone have any ideas?