You do not need to purchase anything again including content. All your purchased software and content are still available to download.
All you need to do is login to your Reallusion Account using the same account details you used originally to purchase iClone 5 and your downloads will be available from the Registration page of your account.
If you can't remember your account details, then just contact
Customer Support and supply your serial number, order number or the email address you think you may have used and they can help locate your account.
Peter
Forum Administrator
www.reallusion.com