Discord is a command line program used to generate binaural, phase, and chronaural beats mixed with tones, noise, or sound files of the users choice. The default is to play the files via the computer's sound card, but they can be written to an output file instead. Only file formats available in libsndfile can be used as input or output. WARNING: USE AT YOUR OWN RISK! If used consistently (a half hour or more per day) over long periods of time (months, years), listening to brainwave entrainment beats will cause psychological change, and might cause profound psychological change. Presumably that is why you are doing this, but now it is explicit. If you are consciously aware of, or consciously suspect, that you have severe psychological traumas that you have repressed, do not use brainwave entrainment beats until you have resolved the traumas or are comfortable that you can deal with them if they become conscious.