Let me start with the fact that I just joined Spotify after hearing that you can go offline mode with the app. I don't have 3G on my iPad and I'm interested in listening to music as I walk in my local recreation center... therefore, come to Spotify, I have.
I created a playlist on Spotify on the Windows client from my Pandora 'likes'. 436 tracks, woo. I turn on my iPad and while the name of the playlist, it's a dead husk of a thing with no songs inside. How do I make the transfer?