How Do I delete music that won't play?

[AC Question]

How Do I delete music that won't play

Okay so I have this download manager thingy so I can download song from tubidy and I was recently trying to free up space on my Sony xperia M4 aqua and I went into the misc section and I deleted this folder that said ADM which is the download thing. And now none of the music I downloaded with it will play. So I was like that's no biggie I will just download them again so I went to delete the music and it just comes up saying that this item cannot be deleted and I have no idea how to get rid of if

 

[B. Diddy]

"Free" mp3 downloader apps are most likely illegal and promote piracy, so we can't discuss that. Thread closed.