SoundTap Pro Edition for Mac by NCH Software is a full-featured program that lets you record just about any audio that plays through a Mac OS X including streaming radio, VoIP calls and Instant Messaging conversations. Simply install SoundTap Pro Edition for Mac, turn it on and then all sound played on or through the computer will be recorded as wav or mp3 files. All audio is ‘tapped’ by a virtual driver directly within the kernel so the process is of perfect digital quality.