Hi i have a 2004 x5 with sat nav with the dsp control, the radio and cassette player is working fine but when selecting the cd option the cd player is working fine as i have tried two more, there is no sound coming out and the screen on cd mode only flickers displaying track 98 for a few seconds, tries to load but doesnt,, the cd changer in the boot is ok and working fine like i said i have tried two but the same problem...

any ideas....