a player software and an appropriate codec the file is compressed
Audio files are place into Audio tracks in video editing programs.
metasites and locating audio and video files.
yes, any audio or video editing software should be able to do it. Also, there are standalone programs available designed to do exactly that with the click of a button (google "rip audio from video")
A Zune is not an audio format like an mp3, it is a music/video player designed by Microsoft. It plays mp3 audio files as well as Microsoft's mp3 alternative, wma audio files.
A podcast is a clip of audio or video content that is broadcasted over the internet using compressed audio and video files such as MP3s and MP4s.
No, however you can receive viruses from video files and pictures.
VLC
You can use programs designed to split video files, see the related link for an example of one which you can try for free.
You may need a media player such as Windows Media Player, Quick Time, VLC etc. These programs are needed to open the video or audio files.
yes
It is abosolutely possible to rip audio from video files. You only need to use a computer audio recorder.
It produces .wma (for audio files) and .wmv (for video files).