Audio and Video Editing Tools
VLC Player is a free media player that works across platforms (Windows, Linux, and Mac), and can play Flash video files (FLV) in addition to many of the other popular file formats (Mpeg, AVI, DivX, etc).
Your computer may have come with a video editing program preloaded, such as Windows Movie Maker or iMovie. If you need a video editing program, two programs with a reasonable cost are Nero 8 Ultra Edition and AVS Super Bundle. For Macintosh computers, Screenflow is a handy and relatively inexpensive program (compared to similar products).