Offering preliminary support for OS X 10.8 Mountain Lion, Rogue Amoeba’s Audio Hijack Pro gets bumped up to version 2.10.4 with an updated Instant On component (now version 6) that improves overall system audio capture. In fact, the Instant On component is now required for capturing audio from Safari and QuickTime Player when running Mountain Lion, as well as when snagging audio from a Fluid app. ($32 new, free update, 5.2 MB, release notes)
Smarter Parental Controls
If you've been using the parental controls options in Mac OS X to lock your child out of using a particular computer late at night, but would like to employ a more clever technique to limit Internet access, turn to MAC address filtering on an Apple base station.
To do this, launch AirPort Utility, select your base station, and click Manual Setup. In the Access Control view, choose Time Access to turn on MAC filtering. You'll need to enter the MAC address of the particular computer, which (in 10.5 Leopard and 10.6 Snow Leopard) you can find in the Network System Preferences pane: click AirPort in the adapter list, and click Advanced. The AirPort ID is the MAC address.