video:
video files are available for streaming or downloading in quicktime format (.mov). viewing will require the quicktime (version 6+) plug-in, which is a free download, and is available for mac and pc users. because the videos have been encoded at a fairly high resolution (to preserve image quality) streaming is recommended only for users with a high-speed/broadband connection. dial-up users wishing to view the videos should choose the download option.

audio:
audio files are available for streaming in audio-only quicktime format (.mov) or downloading in mp3 format. the streaming audio files are encoded at a lower resolution than the downloadable mp3s, to allow users with dial-up and high-speed/broadband connections access. streaming audio requires the quicktime (version 6+) plug-in, which is a free download, and is available for mac and pc users. there are many different choices for playing back mp3 audio downloads. iTunes is recommended, and is also available for mac and pc users.