Has anyone ever used a video like this for meditation..

https://www.youtube.com/watch?v=AHr-...e_gdata_player

Or does anyone use music such as this..

https://www.youtube.com/watch?v=JwJs...e_gdata_player

If so, were/are they better than trying to sit thinking about nothing?

Obviously I've tried these both once, & I think they might be good, but I'm talking long term here, are they good long term.