I have iTunes 10.6.1 installed on my Mac. My mac is version 10.6.7, and I cannot upgrade it because it is on an image with software update disabled. I just updated to iOS 6, and obviously can't downgrade. iTunes 10.7 is the first version of iTunes to support iOS 6, and iTunes 10.7 requires Mac 10.6.8. I have access to both Windows and Linux (unrestricted, unlike on the Mac), but my library is stored on an external HDD formated to HFS+ (OS X Extended), meaning it won't work with Windows (I believe the same problem would occur with a Windoes VM in Linux). iTunes doesn't support Linux, so I can't use it there. Is there some other way I could sync them?