BrainWave Generator). It's induced a trance in me before. Hit or miss really, and I think your state of mind before beginning a session really has a lot to do with it, as does your audio equipment--need to make sure your left & right channels don't bleed together at any part of the system.
I distinctly recall generating a long .WAV file of one of those rhythms, then listening to it at work. It put me into a focused trance. Some short time afterwards a coworker invited me downstairs to the break room to play pingpong and I was impressed at how "in the zone" focused I felt during the first ~15 minutes of the game. I was scoring more points than usual during that timeframe (playing someone who's pretty much at equal skill level). The effect wore off after ~10-15 minutes.