http://www.mp3-box.org/mp3-ipod-nano/

Can I use songs from my old SONY MP3 player on iPod Nano?
We just uploaded 4G or so of music from the old MP3 player, and only 1.3G got into My Music.
Now, Quick Time has vanished, though not the file fodlers for it, and itunes won’t let me in without it.
Did I do something wrong?
Maybe you could try removing itunes and quick time all together. Like go to your Add or remove programs and delete it.
Then download it again.
After that you will have to get all your music to itunes because you can’t put music on the ipod without itunes..
I hope that helps.
MP3 / MP4 / MP5 Style ipod Nano 6th 4GB