QuickTime 7.1.5とiTunes 7.1
http://www.apple.com/jp/ftp-info/reference/itunes71formac.html
http://www.apple.com/jp/ftp-info/reference/itunes71forwindows.html
http://www.apple.com/jp/ftp-info/reference/quicktime715forwindows.html
http://www.apple.com/jp/ftp-info/reference/quicktime715formac.html
QuickTimeの脆弱性の修正(http://docs.info.apple.com/article.html?artnum=305149)があるので、お忘れなく。