Vemedio has released Instacast 1.0.2 with an AirPlay adjustment for the forthcoming OS X 10.9 Mavericks. Now when you stream audio from the podcasting app, AirPlay doesn’t need to switch the system audio output device (under Mavericks Beta 3 or higher). The update also adds support for viewing podcast feeds, episode images, and chapters using Quick Look, as well as support for chapter links and images in MP3 ID3v2 tags. It also ensures the system won’t go to sleep during download, adds the capability to pause playback before system sleep, fixes localization issues and crashes, and improves play button behavior. ($19.99 new, free update, 5.7 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.