And it is YouTube's beta program of the audio swap feature. What is the audio swap feature? If you don't know what it is, this is the exact video that you need to watch. It is going to be a huge revolution in terms of how people are watching YouTube, so make sure to watch the whole video to get a good idea of what it is enjoy. It might not be making the biggest waves yet, but YouTube's new audio swag feature is going to make a big splash and soon after months of working in the shadows, YouTube has finally started a pilot program for the long awaited feature.