Stairways Software has released Keyboard Maestro 6.4 with support for reading and modifying file tags in OS X 10.9 Mavericks. Amongst the update’s more than 50 changes, the automation utility also improves accessibility and VoiceOver support, adds asynchronous options for executing scripts and sub-macros, adds several new AppleScript commands, plugs a memory leak in the image finding code, and fixes a number of potential crashes. ($36 new with a 20 percent discount for TidBITS members, free update, 24.4 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.