Project this onto your TV using Google Chromecast which is the newest way to enjoy online video and music on your TV. Plug it into any HDTV and control it with your existing smartphone, tablet, or laptop: www.google.com/chromecast
Why 3 hours? Tranquil nature soundscapes are excellent for relaxing, meditation, insomnia, studying, tinnitus sufferers, or just play the background scenery on your big screen TV when you are not watching shows. The genre is called "slow television" or "slow TV".