I’ve been using Bluetooth with songs on my iPhone for the past year or so. Sometime last year, an update messed up how songs play on USB. This last road trip, I plugged my USB back in for the first time in a long time. I still get error messages when I try to play an album, but it’ll play the song if I use the < and then > back. I still consider the Tesla audio system broken but do work-arounds to get something to play. Yes, Hiroshi, the sound is so much better with USB.