I have an iphone4s and I have been trying to sync a playlist for offline listening with my premium account because I'm going to be driving for five hours and don't want to waste cellular data and won't be connected to wifi. I have over 1GB of free space on my phone. I went to my playlist and switched the switch so that it is "avaliable offline." Grey little circles with arrows appear but they don't turn green and it's been like this for about 30 minutes. When I press edit it only gives me the option of deleting songs off my playlist not the option off clicking the circled arrows! Please help!!