This is how it works, or did work when I was working for a major. 1. Video gets uploaded, assuming it contains no adult/illegal material it's allowed to be shown. 2. You begin to get hits. 3. People from selected major search through youtube looking for copyright infringement material. 4. If found, automatic email is sent to youtube containing what actions are to be taken. Usually with something that has many hits and is popular, you would see something by the info saying "Contains material from selected major" If it's small time, the audio is muted. I wouldn't have though they would have muted something with 19,000 hits! The main thing is that the companies have people scouring the internet looking for things they can take more income for. It is almost impossible to get permission from them, so no matter what you're likely to get a tug. Hope that was of some help