If you are on a dial-up connection, you may not be able to play the
video due to the amount of bandwidth normally required to play video on
a computer.

If you are on a dial-up connection and
you are downloading the MP3 audio of a lecture, it may take hours to
download the entire file. However, you should be able to play the audio
satisfactorily.

The audio or video plays in the following software applications.

• MP4 video plays in the current version of Quicktime. download QuickTime
  On a PC, click the MP4 link and either open with QuickTime or save it
  to your desktop and open in QuickTime after the download has completed.
  VideoLAN is an open source alternative QuickTime to play MP4 video. download VideoLAN

• MP3 audio
  downloads directly to your computer and plays in the current versions
  of Windows MediaPlayer, Real, QuickTime, iTunes, and Winamp.

Still have questions? Send an email and we'll try to help.