OS X: Here's an app that lets you record audio, without having to jump through hoops! Its called Piezo, and it simplifies the process with a one click method to record audio from any application.

You can set Piezo to record from any open application, including web browsers, Skype, and even Spotify. It'll especially come in handy if you need to capture audio from a webapp.

You can download a demo version from developer Rogue Amoeba's site that allows up to 10 minutes of recording per session or you can purchase the full version for $10.

Piezo | Rogue Amoeba via The Verge