So what do you do if your iTunes won't play back downloads from the iTunes store? My hard drive died, and I had to use Time Machine to back it up thank god for that, but now all my purchased music will not play back? I sent a email to the support group and got an answer that was beyond stupid, they reset my authorizations to 0, and told me to re-authorize the computer, but I already told them it won't allow me to do that? What a dolt! Anyone have any suggestions?