After some research, I learned that the head unit for my entertainment system (hidden cd player behind a rotating nav screen) does not support MP3 formatted CDs. I am not looking to replace the whole head unit. Any way of replacing the CD player behind the screen with a player that supports MP3? I installed a Media Bridge to support Blue tooth to my phone and I guess I could always plug an old style audio MP3 cd player into the Bridge, but prefer a cleaner alternative. The only reason I am looking for this capability is to listen to audio books on MP3 CDs.