I have a JMDM-IPBT-GL18 installed on my 2007 wing. All of a sudden, the unit no longer plays music from the CF card. The CF card stores and plays mp3 files. I changed the card, reformatted and still nothing. All other functions appear to work fine. Only difference is playing music via plugged in iPod connection, dramatically lower quality versus Bluetooth. What can I do to restore CF card to work? And is Bluetooth quality supposed to be so much better than hard line connection?