I'm having a glitch where once I save a playlist one way, I can no longer change the order; if I add new songs and/ or try to change the order of another it does it's best to keep songs before and after the one I tried to move next to it. (So, moving one song actually moves 3, or doesn't move them at all and creates either duplicates of others, removes some, or just changes the order differently.) I've had to delete, wait a few hours, and then rebuild my playlist in order to successfully change the order to how I desire for one. And it seems like it might be a bug related to phone sync as it first happened after I changed the order of a song using my phone, but I'm not actually sure. Just wanted to report this in case it was not known.