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We are remaining firmly skeptical about this, but there are some binaural sounds you can play through earphones that supposedly hack your brain, making you feel like you've had too much coffee, feel relaxed, or can even allegedly simulate sex. These downloadable sounds feed you a different tone in each ear, and the combination of the two delivers a frequency overtone that is said to alter your brain waves.

Now we've seen low-frequency sounds send someone into convulsions, but are also aware that 50% of the time, the placebo effect is responsible for the effects of any drug or technique. Now if you'll excuse us, we're going off to try a few of these.

Hack Your Brain with an iPod [forevergeek via digg]