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)
Expose Shortcut for View All Windows
In Expose mode in Snow Leopard, press the Tab key to view all windows belonging to one application (equivalent to pressing F10 or Control-F3 on recent laptops). Press Tab again to switch between applications while remaining in Expose. You can also click an icon in the dock.