Well if it's not one thing..... This morning after breakfast, I restarted the car and had no audio from any source. The radio displays, the CD displays and the cassette displays but no audio? Should I do a hard reset?

 

Not an expert on it by any means but a hard reset is not going to hurt. Also, check amp fuses

 

Well... I just went out, started the car and everything works? I think the cassette player was the cause. The switching back to CD once the cassette ejects was hung up. If I were Catholic I'd sprinkle Holy water on it!