I have previously synced a couple of local songs from my computer to my playlists, and when I pulled up the playlist on my phone I was able to listen to them. Recently I tried to add a few more songs using the same process and the songs will show up on my phone greyed out. I have the playlist set to download on both my phone and computer, and it just continually says that it is waiting to download these songs. I have deleted spotify on my phone to get it to reset itself, i have gone on my computer and moved the local files into a separate playlist and set them to download, and I still cannot get them to sync. They are both on the same network, and they sync.