I was thinking about this for a long time....now I got it.
http://www.relaxingtv.com/
a nature sounds with video clips
they got fire, hawaii, snowfall, sunrises, sunsets, waterfall, beaches...

but I'd like it stay longer and higher resolution.
maybe with screen saver, maybe just an application, or a website, or maybe make it like a window on your wall.

06/2/23
BrainWave generator try to use sound and light to modify your brain wave, and try to put you into relax status.