On my BMW forum, a guy connected an apple airport express to his car, then fed it into a digital to analog converter, then to his jl audio MS8 to get lossless audio streaming music from spotify (320bps) through WiFi/airplay via his iPhone. For this to work for android, I would need to simultaneously pull data through 3g/4g via spotify and send it via WiFi/airplay to the airport express. Here is a link to the thread: CD quality music from iDevice to processor/amp, no wires, no signal loss! - BMW 3-Series (E90 E92) Forum - E90Post.com Is there a way to do this through android via airplay, or using another audio hotspot type device and app? Thanks.