The VirtualDub program allows you to edit your video and audio. It is not as complex or as fully loaded as an Adobe program but simply enough to operate and best of all it is free. Most amateur video editors use the VirtualDub program for editing their video.
Download Player VLC
The VLC player is one of the best media players on the market.Also known as the videoLAN client the VLC player will play just about any file you need. Best about the VLC player is that it will play partially completed movies which you download.