To vrinda's point - I wonder how "Miami Vice" got treated. If I remember right, they bought rights to the music they used and it was a different song every episode. If I also recall, their budget was gianormous.

As far as YouTube, did they go after you Mr. Mike and not the other guy because you were already on their radar so to speak? Just like anything else, the rules seems to be applied subjectively rather than objectively.