I am also a "library of mp3 luddites", and to me it sounds as though the Echo can do any Bluetooth audio, like a modern head unit. So you might say, "Computer,

I am also a "library of mp3 luddites", and to me it sounds as though the Echo can do any Bluetooth audio, like a modern head unit. So you might say, "Computer, play Bluetooth audio", or "Computer, skip this track," and it would work just like pressing play and skip in your car. This may just be wishful thinking on my part, however.