code: def get_audio_path(self, ann):
      return os.path.join(self.audio_root, ann["sample_id"])
  
imports: import os
  from collections import OrderedDict
  import torch
  import copy
  import pathlib
  import random
  import json
  import pandas
  import torchaudio
  import torch
  from tqdm import tqdm
  from lavis.datasets.datasets.base_dataset import BaseDataset
label_desc: Use image node_id 2 for calling the ESC50 obj's underlying member method code with example usage: obj.get_audio_path(ann) and returns: os