I did a search here and didn't see this topic covered. I have MacBook Pro and VMware Fusion running an instance of Windows XP. Both have iTunes 7.5 installed. Both are using the same iTunes store account for authorization. I was under the impression that iTunes had to be at the same version for all installed copies using the same iTunes store account. Is this correct or can I have iTunes 7.6 installed on my MacBook Pro and leave iTunes 7.5 installed under my Windows XP without having to upgrade it to the same version (7.6)?