Can you share more details on the forum? If you can, that will save you time versus replying to a couple dozen private messages.
For example, do you want your device to react to simple stimulus, like amplitude? Or specific frequencies (eg FFT)? Or certain groups of frequencies in some order? Do you already have your analog front end ready, with a nice voltage ready for the ADC? Or do you want someone with opamp experience to do that for you?
The LED and motor control is probably very simple.