Thank you very much Grant.

I still have some questions about this program.

1) Why do many presets have to stay at high frequency for a while before going down? I feel like I can't rely on my own created preset since I may not know how to creat it effectively. Does it require additional knowledge other than brainwave frequency in order to creat effective preset?
2) What is the effect of multiple voices? Since you suggested playing 40Hz beta and 8hz alpha simultaneously? Hmm , this is unclear for me.

3) So... if I want my own superlearning preset. Can I just open any existing preset ... change its length to 30 mins, change the binaural beat line to straight line at 8Hz. Add new voice and change the binaural beat line at straight 40Hz. And finish.. Is this right? Sorry for this kind of question but I'm a kind of strange people who need strong clarification..