Rogue Amoeba has released Airfoil 4.7.5, which restricts searches to your local network to prevent possible issues with Back to My Mac and iCloud. The update also fixes an issue with failing to open a DVD in Airfoil Video Player, prevents a crash if the Transmit button gets pressed exactly as an output disappears, and provides some small improvements for Retina displays (a full Retina display update is yet to come). ($25 new with a 20-percent discount for TidBITS members, free update, 10.6 MB, release notes)
Hide TextExpander in the Dock
If you don't want to see TextExpander's icon in the Dock and the application switcher, you can remove it. Just open TextExpander > Preferences > Appearance, and select Hide TextExpander Icon in Dock. You'll still be able to access TextExpander from its menubar icon.