Sending Data from my PC to my Arduino

So I am very new to arduinos and I'm trying to recreate the Christmas light show. Where basically the LEDs change brightness based on the song's pitch, frequency etc. I was wondering if I would be able to send .wav files from my laptop to the arduino to be able to control a LED.

You should translate the wav files into LED signals on the PC. Then use the fastest communication channel to transmit the LED signal to the Arduino for display.