Do you want to watch videos with amazing sound quality on your devices? If so, you might be interested in DivX software, which supports Dolby Audio, a technology that enhances the audio of your videos. However, to use this feature, you need a serial number that activates it. How can you get one? In this article, we will show you two ways: buying it from the official website or finding it online for free. We will also explain why the second option is not a good idea and what are the alternatives.