Sonic Vitamins makes some quite outlandish promises. The main claim is that simply by listening to an MP3 file (or a CD if you prefer), you’ll be able to alter your mind. Legally. Much like popping a pill.
The range of topics covered include the usual self help ideas such as increasing your energy levels, boosting your brain or helping you relax. There’s even a section called “fun” which aims to lift your mood.