What I want to be able to do is within a window of time (eg a couple of hours) after I leave the car, is to still be able to access the empeg remotely - eg to upload new music that I just bought - from my flat.

Seems to me like you're unnaturally limiting yourself in this case. What if you wanted to upload the songs in the middle of the night? Shouldn't you just power the wireless ethernet device 100 percent of the time? How much current does it draw if it's not transmitting?

I seem to recall Hugo discussing an idea that the Empeg might be able to do a brief wake-up every X seconds to look for ethernet packets, for just this sort of eventuality. Anyone have that thread link handy?

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Tony Fabris