Screen Recording with sound (using Soundflower)

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If you have a Mac running OSx 10.6 or later, the QuickTime Player will be capable of screen-recording. However, most users of this tool want to be able to record the sound from their computer too. An open-source extension can be downloaded from http://code.google.com/p/soundflower/ which will enable you to easily record the sound from your computer alongside the screen itself.