code: def find_all_files(path_dir, extension):
      out = []
      for root, dirs, filenames in os.walk(path_dir):
          for f in filenames:
              if f.endswith(extension):
                  out.append(os.path.join(root, f))
      return out
  
file_path: textlesslib/examples/expresso/classify_audio.py
imports: import torch
  import torchaudio
  from transformers import AutoFeatureExtractor, AutoModelForAudioClassification
  import os
  from tqdm import tqdm
label_desc: Use image node_id 1 for calling a global function with example usage: find_all_files(path_dir, extension) and returns: out