While small in terms of numeric progression, Audio Hijack Pro 2.10.1 from Rogue Amoeba adds some welcome new features. The latest release of this audio recording program includes the latest version of the Instant On component (5.0), which can now capture audio from sandboxed applications purchased from the Mac App Store. The Multi-Process mode, previously used in conjunction when pulling audio from several Web browsers, is now used for additional applications to improve audio capture. Finally, audio pulled from input devices can now be configured in Audio MIDI Setup instead of always using channels 1 and 2. ($32 new, free update, 5.2 MB, release notes)
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Constant Dictionary Definitions
If you hold down Command-Control-D in a Cocoa-based application that supports AppleSpell, you'll see little dictionary pop-ups for each word that you mouse over. Neat, eh?