I recently bought a Nokia 620. Ubuntu 13.04 does recongize it and is able to mount it. Music files transferred through the file explorer don't show up at all in my phones media player. Trying to do it with Rhythmbox makes it crash. I have found that Clementine is able to do the job. However, transferred tracks lose their "artist" tag for some reason.
So here comes the question: What program you use to transfer music on you WP device? Or do you do it through Windows?