Yesterday I was listening to iTunes on my computer, shut my computer down and went to work. When I came home, iTunes wouldn't work, it said Quicktime had been deleted and to reinstall iTunes. Turns out my sister went on the computer in the time I was at work and deleted Quicktime! I tried to restore my computer to the time when Quicktime was deleted, but it still doesn't work. How can I fix it? If I have to reinstall iTunes, will all my existing music be recovered?
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