How can I capture audio with Screenium (version 3.1)?
Screenium relies on the free Soundflower (Cycling 74, Google Soundflower project) driver to capture everything you hear from your Mac’s speakers. This basically includes audio from almost all applications, as well as system sounds, warning sounds, etc. Adding this extension is the only way for applications to capture system audio.
Download Soundflower version for Mac OS X 10.7 and later.
Once Soundflower has been installed, “System Audio (Screenium)” will be available as an input source in the audio settings. Enable the corresponding checkbox to activate the relevant input sources for audio recording.