For example, when I encoded the soundtrack to "The Sopranos", I didn't want the Frank Sinatra song to list "1999" as the year, or "The Sopranos" as the album. I wanted the correct original information in those fields.

I disagree. There are often subtle differences between what's on "that album" and what makes it onto the collaborative effort, and often they are undocumented. (For example, my friend tells me the "In Your Eyes" on the ...Say Anything soundtrack is mixed differently than when it appeared on the album, but there is no "edit" or "mix" associated with it.

I'm a firm believer in saying "This is the copy of title as it appeared on album in year"

But that's me.