Click a video link under Now Showing to view that video in the embedded media player. Note: video file size and bit rate will vary depending on the capabilities of the device you use. If you can't view the videos using the embedded media player, try updating your browser to the latest version (that should fix it).
However, if you are using Internet Explorer, you may also need to download/install the latest version of either Apple QuickTime Player (older versions of Windows), or Windows Media Player (Windows 7 or later).
If you still cannot use the embedded media player, but you have an external media player installed, or you are downloading to a mobile device, try using the Alternative File Downloads. Those videos are provided in two formats: H.264 or MPEG-4 video encoding; both formats use AAC audio encoding. The audio files are provided in two formats: MP3 (MPEG Audio Layer 3) or OGG (Vorbis Audio). If you can't use one audio or video format, try the other.