New in Audio Hijack Pro 2.5 is the System Audio source. This enables Audio Hijack Pro to optionally capture all audio coming through speakers, instead of just one application's audio. While capturing audio on an application-level is recommended for most cases, capturing System Audio may be useful in some instances.
Initial Setup
The first time you use the System Audio component, you may need to install SoundFlower. To do this, create a new session and set the source selector to System Audio. Now click the Install button in the pane, and the SoundFlower installer will open.
Once SoundFlower is installed, the following steps will allow you to hijack and record System Audio.
Step 1) Create a new session, and set the source selector to System Audio.
Step 2) Click Hijack, and all audio will flow through Audio Hijack Pro, and then out your speakers. That's it.
Once you've got this set, you can create adjust or record any and all audio on your machine.
Notes
Some applications have their own audio outputs. You'll need to set these to output to SoundFlower as well, in order for AH Pro to pick it up.
Some applications will need to be relaunched to properly play their audio through the required output. If audio isn't being pulled in through Audio Hijack Pro, first try relaunch the application playing the audio.