you had a sony that WORKED???
I'd rather have a block of wood in my dash than my sony. It didnt' even know how to skip right. When something skips from a bump, the music stops quickly, then recovers. Mine did that too, but it wouldn't pick up where it left off. It would be as if it didnt' really skip. If you sang along, it would pick up where it WOULD have been if it didnt' skip at all. Or it would skip to the same time of the next track. The display often froze on me.
If you are driving your jeep the right way, you would make the radio skip