Oups I forgot to add something :

Often I make the process (search and download) several times on an author I like very much, (to try to get all the song from the author).

In this case too, i have many duplicate.

And I am sure that most of my duplicate are here, because i selected song that i was already having.

So the feature request is to verify better in /completed about similar song name when downloading a new song.

Thanks to Xolox team