How can I capture audio with Screenium (version 3.2)?

To record the system audio with Screenium 3, the Soundflower-based Synium Audio Driver is required. Soundflower is a free driver extension that allows you to record audio transferred from an application to your Mac’s speakers.
SyniumAudioDriver Installation Wizard

SyniumAudioDriver (Screenium 3.2.2)

  Once Synium Audio Driver 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.