Why do two posts, from different authors, have identical content? And all the other comments (so far) tell a very different story? Seems rather suspicious.
Deleting ALL files when trying to clear a song… is there no warning about what the program is about to do? Did the person who posted that have non-audio files on desktop that were deleted?
Until you trust a program, never run it on real data or in folders with other files.
As for the person concerned about poor quality of recording, was bit rate set low like 128 or 96? Can it be changed to 256 or 320? Did you try saving to FLAC instead of MP3?