Recording the audio source from your Mac isn’t as easy ast it would seem. When recording a podcast, for example, many Mac podcasters use third party apps like Soundflower or external mixers to record both the audio in and the audio out of an interview, for example. Other apps, like Audio Hijack, also exist to record any sound you have occuring on your Mac, but those can be pricey, as they include many features beyond simple recording.
If you want a free, simple to use Mac audio recording software, you might want to check out WavTap.
Snapping a screenshot on your Apple device is dead easy: home-plus-sleep-button for iOS, and Command-Shift-4 (or others) for the Mac. But what about snapping a sound-shot, i.e. grabbing a snippet of your system audio?
Well, you could fire up Quicktime and start dickering around with that. Or you could install WavTap and then hit Command-Control-Space.