Does Windows support metadata for every file?

Question

I know things like images, music, videos support metadata. My idea is that I want to write a download manager that adds info to the files I download: the URL I downloaded it

Answer 1

NTFS supports metadata, I've never thought about how to access it beyond what you can do by right-clicking on a file, clicking Properties and then Summary. You can edit existing metadata by clicking on the Value column.

There's a question on StackOverflow that's similar: How do you retrieve image tags From one of the answers there, there's a link to MSDN with more details of the Vista (and XP) Property System.