I'm so sorry this has happened to you. I'm not a professional photographer but I DO have a profound love interest in photography and I have personally researched on your behalf for a solution. I have come up with nothing. It seems if the cd was only scratched it could possibly be fixed...but not a totally cracked cd.
It is always advisable to have ALL of you precious digital images not on 1 but 2 disks. Use 1 disk and keep the other as an archive. The more you use a disk, the more wear and tear, the more you risk losing your data. Also, it is also advisable to store your images on archival gold disks rather than silver. Gold disks are more money but in the long term, they last longer. They are much more durable. They also offer the most resistance to oxidation, something that silver disks have a problem with. I store all of my digital images on DVD-R disks. They are called eFilm Archival Gold DVD-R by Delkin. I got them from Amazon.com. IF I find a solution, I will send you a personal message.