Local Files Won't Play Song.

[PianoMan_2012]

Hello everyone. I have a song that I downloaded from the Internet that I would like to add to my Spotify Local Files. I have added songs to local files before, but this one seems to not work when I try to add it. It shows up on Local Files and I can add it to playlists, but it doesn't play when I try to play it. The song is here.

I am very new to the forums here. If I did something wrong in this post, please don't hesitate to tell me.

EDIT: Never mind. It seems that converting it into a .m4a file seems to fix it.