I've not seen this posted here/any other website. I know for a fact it works, and I've used it myself on many occasions.
After you have uploaded your video, goto My Videos.
Find your video on the list and click the Audio Swap button for it.
Once you are here select any random song from the list the to left.
On the right there will be a small embedded video and a button that says preview. Let the video load for about a second and a half then press preview again, rinse and repeat.
DO NOT OVER DO IT
I'm not sure what the limit to this is, as I have not tried to reach it. A youtube scamming video dosent need anymore then 300-800 views and some comments to be successful.
If you wanted to take this a step further you can of course download a autoclicker and have it click preview every 1-2 seconds. Again I must stress, don't over do it. I'm not sure how long youtube will keep it this way, let's not make them have any reason to rush and change it.