I would recommend software from
transparentcorp, if you want to learn how it works and apply it.
If you just want to be a consumer I would recommend
iMusic Series by Volition Thought House: your Soundtrack for Success which is made with the software.
transparentcorp software has the advantage that it does a bunch of related techniques with are similar to binaural beats but don't require headphones.
I am at the moment using the Wake Up CD from the Imusic series on my way to a 1.5 hr/3 hr sleep shedule (at the moment you can add an additional 30 minutes getting to sleep/awake).
In addition I have used the software from transparentcorp to enchance my meditation.
transparentcorp has also a nice forum, in which a spent a little bit of time. If you want to use a software to make your own recording I would recommend reading the forum, to get to know which frequencies work for other people for which purpose.