import nussl
import os

def separate_audio(file_path):
    # Load the audio signal
    signal = nussl.AudioSignal(file_path)

    # Apply Repet separation
    repet = nussl.separation.primitive.Repet(signal)
    bg, fg = repet()

    # Save the outputs
    bg_file = "background.wav"
    fg_file = "foreground.wav"

    bg.write_audio_to_file(bg_file)
    fg.write_audio_to_file(fg_file)

    return bg_file, fg_file