UpFish

UpFish is a Chrome extension that allows you to modify the audio of your streaming movies. Out of the box, UpFish can: - Turn "Harry Potter and the Sorcerer's Stone" into "Wizard People, Dear Reader", in which Harry and friends swear and drink a lot - Turn "Vertigo" into "Fartigo", in which Jimmy Stewart farts a lot - Karaoke any music video (remove vocals from the center) If you can write a little JSON, you can make UpFish do other things, too!

Screenshots from Chrome Web Store