Rogue Amoeba has released Airfoil 4.7.4, which now provides support for Airfoil Speakers for Android (which was recently released as a public beta). The network audio streaming app also improves support for audio sent from an Apple TV (running iOS 5.1 or later) to Airfoil Speakers and fixes a crash that occurred when selecting "Show Airfoil Only in the Menu Bar" in Preferences. ($25 new with a 15-percent discount for TidBITS members, free update, 9.1 MB, release notes)
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Quick Look Shortcut in Expose on Snow Leopard
In Expose mode in Snow Leopard, hover your mouse pointer over a window and press the Space bar to view a larger Quick Look version of that window.