Get frequency data from a Media Player

[BrandMChaos]

Is it possible to use this library to use something like Fast Fourier Transform (in this case specifically Discrete-Time Fourier Transform) on output audio ?

Right now I'm trying to use this data to turn it into instructions that will have motors move in sync to a song for example

[markheath]

NAudio does provide an FFT implementation (see FastFourierTransform) and in NAudio.Extras there is a class called SampleAggregator which performs FFTs on the audio as it passes through an ISampleProvider which you could adapt for your own needs.