Rogue Amoeba has updated its Airfoil network audio streaming app for the Mac to version 4.7.3, which now offers full support for receiving audio through Airfoil Speakers from devices running iOS 6. The Instant On component receives an update to version 6.0.2 to fix several unspecified issues, and the Airfoil Video Player has been fixed to avoid a crash on OS X 10.8.2. Additionally, audio can be captured from the WebKit application on Mountain Lion and Airfoil has been given an improved update process with automatic downloads and installation on quitting the app (via a newer version of Sparkle). ($25 new with a 15-percent discount for TidBITS members, free update, 9.1 MB, release notes)
Wake On Demand in Snow Leopard
Putting your Mac to sleep saves power, but it also disrupts using your Mac as a file server, among other purposes. Wake on Demand in Snow Leopard works in conjunction with an Apple base station to continue announcing Bonjour services that the sleeping computer offers.
While the requirements for this feature are complex, eligible users can toggle this feature in the Energy Saver preference pane. It's labeled Wake on Network Access for computers that can be roused either via Wi-Fi or Ethernet; Wake on Ethernet Network Access or Wake on AirPort Network Access for wired- or wireless-only machines, respectively. Uncheck the box to disable this feature.