Torchaudio download utility

[desh2608]

Torchaudio deprecated its file download utility, and removed it in Torch 2.0. This causes the data download to fail. It should be replaced with torch.hub.download_url_to_file.

[FrancoisGrondin]

Thanks for the heads-up. I haven't played with Torch 2.0 yet. I suppose we can have a condition to select the proper download tool depending on the installed version? Have you made this change to the code yourself for your own projects? If so, feel free to make a pull request.