The brainwave generator is fun, and works. But I myself am not too happy with it. It's better to learn how to get into alpha state yourself. That way, you won't need a walkman, tape and batteries all the time
Harder to master, but more pure. I have meditated for years, but the result I get with the program is less exciting to say the least.
You probably know that buddhist monks use the opposite of a brainwave generator: silence.
