Did you use a FLAC/WAV file? That should yield the best results.
(Only asking because you linked to YouTube, and I'm not sure if you used the YouTube audio for your source.)
(Only asking because you linked to YouTube, and I'm not sure if you used the YouTube audio for your source.)
I typed the song in the search and pressed the first likely result, which is the youtube video I linked. Using the software as intended I believe.