You might have to upload your music to a website for it. I've found a format where you put a link that leads to a direct download works best
This works, just click a song you upload in this thread or onto your profile comments and then you can open in new tab and copy that link and it will work.
I just figured it out for us and just put this song I just uploaded onto my profile
YAAAAAAAAAAAAAAY
did it, now my profile music is my remastered cover of savior by rise against (found in my remastering my covers thread but idk how to insert a different thread)