Not long ago, but not immediately after updating to iTunes 4.9, problems started. The music store loads with broken links where album covers should be, previews look like they're about to play but don't start and, worst of all, I can't download songs I've bought. iTunes shows that it is downloading song number 1 of whatever number and then the different song names show up, without the number changing, which ends with a -50 error message and advice to try again later. After about 10 tries I'm looking for other help. Any advice?