Something that doesn't appear to be that well known is that WINRAR has the ability to extract from executables. WINRAR is really cheap and gives you the ability to right click some executables and extract their content. This works with the iTunes exe and also works with updates provided by Microsoft. It's the first thing I try on any exe I'm tasked with packaging and I have a high hit rate at getting MSI files out without any effort. The best thing is, you can copy an exe to a folder, right click and WINRAR offers to "Extract here ...", so you end up with all the files neatly extracted into their own folder, all without having to mess about with the TEMP dir. Try it, you'll love it.
Follow below link to package latest version of itunes for Windows 7
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