C150 and Napster

I am having a problem with my C150 and Napster. If I try to drag tracks to the player, it never transfers more than 98%. Then when I disconnect the player, the song is on the player.  The song makes it on the player but you have to continually unplug and replug in the player and transfer songs individually.

Has anyone else had this problem? is there a fix?

I have updated firmware and have tried reformatting (through windows).