Dafür scheint es auch eine Lösung zu geben

(habe ich nicht getestet, nur gerade rausgesucht)


If you want to hear the audio while it's playing on your normal Output device (e.g. your Built-in speakers or attached headphones), you need to open the native OS X application Audio Midi Setup. It's located in your Applications folder under /Applications/Utilities.

Press the + button in the bottom left corner, and press Create Multi-Output Device. Mark to use both your Built-in Output and Soundflower (2ch). Now you can hear audio as usual while routing the Output into your Input via Soundflower.

Now that you have created a Multi-Output Device, go back to System Preferences > Sound and select it on the Output tab as in Step 2.