has started shipping SoundSoap Pro, an audio-restoration plug-in compatible with Mac OS X and Windows XP intended for use by professional audio producers, engineers and others. The software features a four-in-one tabbed interface featuring Hum & Rumble, Click & Crackle, Broadband and Noise Gate capabilities. A real-time spectrogram, 12 level meters, attack, release and tilt controls are included. SoundSoap Pro works with every major plug-in host, according to Bias, including Bias Peak 4, Pro Tools, Avid Express DV, Peak 4, Logic Audio and Digital Performer, and others. It costs US$599; SoundSoap users can upgrade for $499.