Most of the audio issues that users experience when watching Hulu can be fixed with very simple adjustments on the user's end. Here are some suggestions for those experiencing audio issues:
If these steps do not resolve your issue, you may need to reinstall your Flash drivers. To do so:
Advertising Volume
Hulu strives for the best video and advertising experience for our users. On occasion, you may notice a video that seems too quiet compared to the ads that play during commercial breaks. We are aware this sometimes happens and are working on normalizing volume levels.