If I could figure out how to post a link, then I would add music.
After you write your initial post and preview it scroll down to the correction box. Under the box is a place to put links. Put the html code from your browser on the page, utube or any other that you want to share and the title of the page or utube link and preview again, then finish posting. After that the place to put links shows up on the subsequent post boxes before preview.