Rogue Amoeba has released Airfoil 4.7, adding a menu bar-only mode to the popular network audio streaming app for the Mac. By default, Airfoil appears in both the Dock and the menu bar, but you can now choose to have Airfoil appear exclusively in the menu bar and eliminate its icon from the Dock. The update also brings remote control support for version 2 of Last.fm’s desktop app, corrects a conflict with Sibelius, and displays metadata in the Airfoil Speakers menu. It also now correctly displays output device names containing the @ character. ($25 new, free update, 9.7 MB, release notes)
Mac OS X Zip Expanding Utility
Firefox (and possibly other applications) may ask you what you want to do with .zip archives that you download from the Internet. If you want to expand them with Mac OS X (rather than StuffIt Expander), you may be unsure of which application actually does the job. You're looking for Archive Utility (in Leopard and later) or BOMArchiveHelper (in Tiger). In either case, the application is stored in Hard Drive/System/Library/Core Services/. Don't move it from there, though, or you'll confuse matters.