What do you put in the URL box again?
I uploaded .wav files and get $Failed as answer most of the time.
That data set shows 4.6TB of data? Did you use Stream to import? Your code seems like it may be missing a step?
The data set consisted of two sections which were the ones that contained the speech of the voice actors and the song version of the actors. I just used the ones that contained which I believe was around 24 GB.