This week’s Podcast is actually an app designed to help you customize the background noise that helps you focus. Noisli is a free compendium of different types of ambient sound that you can listen to at different volumes and combine (we’re listening to a coffeehouse and train combo currently). Check out Prof Hacker’s latest review of the service, and then check it out yourself! Let us know what you’re listening to, and if you think it’s working…