Did you lose all your music in itunes? If so, they may let you redownload it. Awhile back my system crashed and I had to do a system recovery. Pain in the buttocks! I lost all my music, I had around 600 songs, I sent them an email explaining what happened. They put all my songs back under the "check for purchase" tab, I believe. Got to redownload them. Whew! They said they will let you do this once and to make sure and back up your tunes, otherwise, next time your just **** outta luck!
Feeling your pain......
