Do not want to use MotoCast, have music on SD card and use Motorola Music to create playlist. Twice now I have added new music to phone and songs on playlist disappear, list still there but no songs in them. Want to back up playlist so I do not have to create again or will purchase another music managing software that allow creating playlist that will download to droid Razr. So far I just download music to phone SD card and then create list.