This should be really simple. It’s not. Using an SD card on the Prime 2 I create a playlist (playlist 1 to keep it simple) and can’t see any way to add tracks from the crate or anywhere else on the SD card. Remove the card and open it in engine prime on the laptop. The playlist I created on the prime 2 doesn’t show so create another (playlist 2) and add two tracks from the crate to it. Remove the card and insert it in the prime 2. The empty playlist (playlist 1) I created on the prime 2 shows but not the playlist (playlist 2) with two tracks I created in engine prime on the laptop. Also another empty playlist I created earlier on the prime 2 I delete as it too only shows on the prime 2. Should it really be this hard?