heididevalindsay on "autoplay and loop for music"

I am trying to have my music play and loop as soon as the page is opened. I have tried the suggestion on this forum to use "&autoplay=1" and "&loop=1", but that results in "file not found". I'm not sure if I'm missing spaces or something, but I would really appreciate any insight if you have done this before since there is no help available from WordPress employees right now. Thanks!