Beats me -- there is not a tuner attached, and the player is *not* in a sled and does *not* think it's in a sled (serial port is at 115200).

I have multiple players and multiple cars; it's possible that this Mk.2 was last hooked up to a tuner with a non-default tuner selector setting. I wonder if there's a bug lurking there?

I can select aux input and then go back to the "player" input -- no problem there. Hit the tuner button on the kenwood remote, though, and it well and truly hangs and won't come back without "player -i".