The Empeg UI itself would be a bit pointless, as the whole point was optimising it for the very few buttons and very low-res screen that the car-player had. It's the underlying code, including the playlisting and organisational features, that would make more sense to rewrite for Iphone -- though that's now less like Firefox31's idea of getting new people interested in the Empeg as such.

And I imagine an app doesn't get enough access to USB to implement mass-storage, though there'd be nothing stopping it having enough of an FTP server to allow music to be added over Wifi with zero install footprint on Windows or Mac computers. It might even be worth investigating how much of a mini-CIFS server you'd need to implement, to be mountable as a drive letter from Windows.

Peter