When minim.setInputMixer() is called, it seems that the AudioInput only generates buffers SOMETIMES. Generally, if it starts generating buffers at the beginning, it will continue for the rest of the operation. But if it doesn't, it's not going to randomly start. For now, the option to select inputs (with input mixers) has been removed, but can be re-added by changing the MIXER_BUG boolean to false.
In the meantime, a user-workaround for this is to set the default input to whatever you want it to be, start the program, and then change it back to whatever it was before.
When minim.setInputMixer() is called, it seems that the AudioInput only generates buffers SOMETIMES. Generally, if it starts generating buffers at the beginning, it will continue for the rest of the operation. But if it doesn't, it's not going to randomly start. For now, the option to select inputs (with input mixers) has been removed, but can be re-added by changing the MIXER_BUG boolean to false.
In the meantime, a user-workaround for this is to set the default input to whatever you want it to be, start the program, and then change it back to whatever it was before.