The default official page of iTunes gives link to download 32 bit of Apple’s iTunes for Microsoft Windows operating system (including Windows 7), but it does not mention it :

Its only while installing this version (32bit) of iTunes software in 64bit of Windows 7 you will discover that it is of 32 bit, so can not install:

This is pathetic, because the size of installation file of iTunes is about 77mb.
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You can download 64 bit of iTunes for 64 bit of Windows 7 from Apple’s this support page (click here) :

