I've always been able to listen to cd's but the only thing that shows up on the screen is that "Insert Appropriate disc" error in three different languages. I can change tracks with the knob and switch to the radio by pressing the source button, but again, the screen never leaves the error message. I really want to adjust the audio levels (bass, treble, or equalizer), but I can't get passed that error to see any options. Is there a way to get passed that error message? Last time I called Pioneer, they said I could pay a $200 flat fee and they would fix whatever is wrong with it. I'm just not r