Djltoronto 10+ year member
Member
uhm... OK....Doesn't change the fact that the audio signal went from her iPhone to ther speakers.
but FYI, the digital MP3's or AAC's or whatever format she used, went from the phone to the head unit, where the head unit used it's own D/A converter to convert the digital file to analogue audio, which made it's way to a pre-amp, and then an amp (within the OEM head unit unless you have something else), and ultimately to the cars speakers.
You can not input analogue audio to the USB input of the car. (the RCA outputs from your XM Commander are analogue FYI).