Audio and Video
Audio and Video editing in Powerpoint - watch this youtube video to see how you can edit audio and video right within powerpoint!
CamStudio - Free software to capture video! Watch the video and then download CamStudio!
Wave Editor - Free Sound editor - Wave Editor is a fast and easy digital audio editing software for Windows. It provides powerful and user-friendly editing environment which suits beginners especially and perform basic editing capabilities like: cut, copy, paste and delete parts of recording.