Hush Hulu Commercials! Yay!
Hush is a great app for Macs to quiet Hulu commercials.
Hush is a free app for Macs that automatically mutes your computer during Hulu commercials and restores your volume when the commercials end.
Source: Pash, A. (2011, July 21). Hush Automatically Mutes Obnoxious Commercials on Hulu. Retrieved July 29, 2011 from Lifehacker website: http://lifehacker.com/5821661/hush-automatically-mutes-obnoxious-commercials-on-hulu?tag=downloads