Has anyone tried this program, or another program that tried to change mental states by playing music or sounds to stimulate brain waves? I found the concentration-improving module helped, but the effect didn't last long--maybe an hour. I'd like to try it again, but my trial is up already.

http://www.shareup.com/Neuro-Programmer-download-15801.html

Try the Brainwave Generator. I use it for times to times. Just search on Google for it, it's the first result.

I love this! Brainwave Generator, I found it and helps a lot!