You can! It's way easy. This site is good at hosting songs. You can login with name: firstname.lastname@example.org, PW: bombpops.
Upload the cool song or songs you like.
Then click on more options or something. You'll find it. One of the choices will be to "embed mp3." Copy that. Now that that's over, make yourself a snack. Maybe a nacho platter?
Come back home to the Summer Internet and sign in ID: email@example.com, PW: bombpops. Make a new post. Paste that mp3 "embed code" and whatever else you'd like. Then click publish.
Hey, cool song.