WireTap Studio is described as 'Record Anything. Using WireTap Studio, you can record the discrete audio output of any application, as well as all system audio, or record audio input from any microphone, line-in, or audio input hardware. If you can hear it, WireTap Studio can record it' and is a Audio Recorder in the audio & music category. There are six alternatives to WireTap Studio for Mac and Windows. The best WireTap Studio alternative is Audio Hijack. It's not free, so if you're looking for a free alternative, you could try VB-Audio Virtual Cable or Soundflower. Other great apps like WireTap Studio are Total Recorder, Sound Siphon and Boilsoft Audio Recorder for Mac.
While I don't use Audio Hijack as much as I used to use WireTap Pro, I have set up a couple of ... "sessions," for lack of a better word, to allow me to record audio from web browsers. Great for online radio talkshows or live concerts.
In other words, it takes some getting used to, but you will.