Peter's Receiver Server for the car player would seem to work just fine, except it eats into most of the cache memory and requires the disk to spin continuously.

It didn't, I'm afraid, do the queries properly; the car player's database doesn't have indexes, so things like the artists menu would be hard to make work and impossible to make efficient. The playlist menu worked, and the all tracks menu worked, but that was about the size of it. Never confuse a semi-rigged demo with a shippable product!

One idea was to enable the server only in home mode.

The Right Thing here is to have a PC program that connects to a car player and then serves its music over the Receiver protocol. Everyone with a car player has a PC, or they wouldn't have been able to get music on in the first place. That way, you could even serve Receivers from a Mk.1.

Peter