I have a 2006 IS350 with Mark Levinson audio system and Navigation. My radio and CD player suddenly stopped working. Everything else works fine: Navigation, bluetooth, auxillary, all with sound coming from the speakers. Everything also shows up on the touchscreen, just no sound from the radio and cd player (also the cd's won't eject). Has this happened to anyone else? I can't believe that this supreme sound system only lasted 4 years. Dealer says it will be about $800-900 to replace just the radio/cd. Does anyone know of another way? Please help!