Ever since I downloaded iTunes 9.1 my library has been growing out of control. The only problem is, I haven't added any music to it. It says it's 3,091.80 GB now and tends to get bigger every day. This would be a minor nuisance were it not accompanied by other problems (recently added music disappearing, library file error messages, etc.). Has anybody dealt with anything like this? It may well be a known issue, but my awkwardly worded searches didn't turn anything up.