I recently "add to library" some songs from a CD to iTunes. I'd like to move these songs to my iPhone. I've connected my iPhone via USB to my Mac but it won't let me drag and drop the songs from iTunes to the iPhone, the songs just bounce back. Also, when I click on the music already on my iPhone they are greyed out and I can't play them in iTunes. I have tried File>Sync iPhone but that hasn't helped. I'm using the latest version of iTunes and 6.0.1 on my iPhone. Is there anyway I can transfer music to my phone?