I installed the newer Desktop Software in August...prior to this I had put a bunch of songs on that were formally on my Curve. I never tried to add anymore music until today, and when I went to sync it the message now tells me that most of the music I had on it is "not supported" and it took it off of my device!! It had been working fine all along, so I'm not sure what happened or why!! I see it when I open the manager, and after syncing, I see it briefly on my music list, and then it's gone!! Can I get them back? (they were wv files, not mp3) Help.